diff --git a/.github/workflows/markdown.yml b/.github/workflows/markdown.yml
index dd8177ba..74782f4e 100644
--- a/.github/workflows/markdown.yml
+++ b/.github/workflows/markdown.yml
@@ -20,7 +20,7 @@ jobs:
     steps:
       - uses: actions/checkout@v5
 
-      - uses: DavidAnson/markdownlint-cli2-action@v20
+      - uses: DavidAnson/markdownlint-cli2-action@v21
         with:
           globs: "**.md"
           config: .markdownlint-cli2.jsonc
diff --git a/internal/cli/nooplogger.go b/internal/cli/nooplogger.go
index 86753309..aa66ce50 100644
--- a/internal/cli/nooplogger.go
+++ b/internal/cli/nooplogger.go
@@ -7,3 +7,4 @@ func newNoopLogger() *noopLogger {
 }
 
 func (l *noopLogger) Info(string) {}
+func (l *noopLogger) Warn(string) {}
diff --git a/internal/cli/update.go b/internal/cli/update.go
index ae05bd23..2acad8ae 100644
--- a/internal/cli/update.go
+++ b/internal/cli/update.go
@@ -81,7 +81,11 @@ func (c *CLI) Update(ctx context.Context, args []string, logger UpdaterLogger) e
 		return fmt.Errorf("options validation failed: %w", err)
 	}
 
-	storage, err := storage.New(logger, constants.ServersData)
+	serversDataPath := constants.ServersData
+	if maintainerMode {
+		serversDataPath = ""
+	}
+	storage, err := storage.New(logger, serversDataPath)
 	if err != nil {
 		return fmt.Errorf("creating servers storage: %w", err)
 	}
diff --git a/internal/dns/run.go b/internal/dns/run.go
index 5a73e352..b0d35578 100644
--- a/internal/dns/run.go
+++ b/internal/dns/run.go
@@ -38,7 +38,6 @@ func (l *Loop) Run(ctx context.Context, done chan<- struct{}) {
 			if err == nil {
 				l.backoffTime = defaultBackoffTime
 				l.logger.Info("ready")
-				l.signalOrSetStatus(constants.Running)
 				break
 			}
 
@@ -54,6 +53,7 @@ func (l *Loop) Run(ctx context.Context, done chan<- struct{}) {
 			}
 			l.logAndWait(ctx, err)
 		}
+		l.signalOrSetStatus(constants.Running)
 
 		const fallback = false
 		l.useUnencryptedDNS(fallback)
diff --git a/internal/provider/protonvpn/updater/api.go b/internal/provider/protonvpn/updater/api.go
index 55ed516b..006f6739 100644
--- a/internal/provider/protonvpn/updater/api.go
+++ b/internal/provider/protonvpn/updater/api.go
@@ -371,7 +371,7 @@ func (c *apiClient) authInfo(ctx context.Context, username string, unauthCookie
 	case info.SRPSession == "":
 		return "", "", "", "", 0, fmt.Errorf("%w: SRP session is empty", ErrDataFieldMissing)
 
-	case info.Username != username:
+	case !strings.EqualFold(info.Username, username):
 		return "", "", "", "", 0, fmt.Errorf("%w: expected %s got %s",
 			ErrUsernameMismatch, username, info.Username)
 	case info.Version == nil:
diff --git a/internal/storage/mocks_generate_test.go b/internal/storage/mocks_generate_test.go
index 7227fef6..34399c07 100644
--- a/internal/storage/mocks_generate_test.go
+++ b/internal/storage/mocks_generate_test.go
@@ -1,3 +1,3 @@
 package storage
 
-//go:generate mockgen -destination=mocks_test.go -package $GOPACKAGE . Infoer
+//go:generate mockgen -destination=mocks_test.go -package $GOPACKAGE . Logger
diff --git a/internal/storage/mocks_test.go b/internal/storage/mocks_test.go
index 7f701b14..e99aa5c3 100644
--- a/internal/storage/mocks_test.go
+++ b/internal/storage/mocks_test.go
@@ -1,5 +1,5 @@
 // Code generated by MockGen. DO NOT EDIT.
-// Source: github.com/qdm12/gluetun/internal/storage (interfaces: Infoer)
+// Source: github.com/qdm12/gluetun/internal/storage (interfaces: Logger)
 
 // Package storage is a generated GoMock package.
 package storage
@@ -10,37 +10,49 @@ import (
 	gomock "github.com/golang/mock/gomock"
 )
 
-// MockInfoer is a mock of Infoer interface.
-type MockInfoer struct {
+// MockLogger is a mock of Logger interface.
+type MockLogger struct {
 	ctrl     *gomock.Controller
-	recorder *MockInfoerMockRecorder
+	recorder *MockLoggerMockRecorder
 }
 
-// MockInfoerMockRecorder is the mock recorder for MockInfoer.
-type MockInfoerMockRecorder struct {
-	mock *MockInfoer
+// MockLoggerMockRecorder is the mock recorder for MockLogger.
+type MockLoggerMockRecorder struct {
+	mock *MockLogger
 }
 
-// NewMockInfoer creates a new mock instance.
-func NewMockInfoer(ctrl *gomock.Controller) *MockInfoer {
-	mock := &MockInfoer{ctrl: ctrl}
-	mock.recorder = &MockInfoerMockRecorder{mock}
+// NewMockLogger creates a new mock instance.
+func NewMockLogger(ctrl *gomock.Controller) *MockLogger {
+	mock := &MockLogger{ctrl: ctrl}
+	mock.recorder = &MockLoggerMockRecorder{mock}
 	return mock
 }
 
 // EXPECT returns an object that allows the caller to indicate expected use.
-func (m *MockInfoer) EXPECT() *MockInfoerMockRecorder {
+func (m *MockLogger) EXPECT() *MockLoggerMockRecorder {
 	return m.recorder
 }
 
 // Info mocks base method.
-func (m *MockInfoer) Info(arg0 string) {
+func (m *MockLogger) Info(arg0 string) {
 	m.ctrl.T.Helper()
 	m.ctrl.Call(m, "Info", arg0)
 }
 
 // Info indicates an expected call of Info.
-func (mr *MockInfoerMockRecorder) Info(arg0 interface{}) *gomock.Call {
+func (mr *MockLoggerMockRecorder) Info(arg0 interface{}) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Info", reflect.TypeOf((*MockInfoer)(nil).Info), arg0)
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Info", reflect.TypeOf((*MockLogger)(nil).Info), arg0)
+}
+
+// Warn mocks base method.
+func (m *MockLogger) Warn(arg0 string) {
+	m.ctrl.T.Helper()
+	m.ctrl.Call(m, "Warn", arg0)
+}
+
+// Warn indicates an expected call of Warn.
+func (mr *MockLoggerMockRecorder) Warn(arg0 interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Warn", reflect.TypeOf((*MockLogger)(nil).Warn), arg0)
 }
diff --git a/internal/storage/read_test.go b/internal/storage/read_test.go
index 60e70efe..20bbe17a 100644
--- a/internal/storage/read_test.go
+++ b/internal/storage/read_test.go
@@ -95,7 +95,7 @@ func Test_extractServersFromBytes(t *testing.T) {
 			t.Parallel()
 			ctrl := gomock.NewController(t)
 
-			logger := NewMockInfoer(ctrl)
+			logger := NewMockLogger(ctrl)
 			var previousLogCall *gomock.Call
 			for _, logged := range testCase.logged {
 				call := logger.EXPECT().Info(logged)
diff --git a/internal/storage/storage.go b/internal/storage/storage.go
index 5210b07f..ab0378f8 100644
--- a/internal/storage/storage.go
+++ b/internal/storage/storage.go
@@ -13,30 +13,35 @@ type Storage struct {
 	// the embedded JSON file on every call to the
 	// SyncServers method.
 	hardcodedServers models.AllServers
-	logger           Infoer
+	logger           Logger
 	filepath         string
 }
 
-type Infoer interface {
+type Logger interface {
 	Info(s string)
+	Warn(s string)
 }
 
 // New creates a new storage and reads the servers from the
 // embedded servers file and the file on disk.
-// Passing an empty filepath disables writing servers to a file.
-func New(logger Infoer, filepath string) (storage *Storage, err error) {
+// Passing an empty filepath disables the reading and writing of
+// servers.
+func New(logger Logger, filepath string) (storage *Storage, err error) {
 	// A unit test prevents any error from being returned
 	// and ensures all providers are part of the servers returned.
 	hardcodedServers, _ := parseHardcodedServers()
 
 	storage = &Storage{
 		hardcodedServers: hardcodedServers,
+		mergedServers:    hardcodedServers,
 		logger:           logger,
 		filepath:         filepath,
 	}
 
-	if err := storage.syncServers(); err != nil {
-		return nil, err
+	if filepath != "" {
+		if err := storage.syncServers(); err != nil {
+			return nil, err
+		}
 	}
 
 	return storage, nil
diff --git a/internal/storage/sync.go b/internal/storage/sync.go
index 1e0b539b..de355c9c 100644
--- a/internal/storage/sync.go
+++ b/internal/storage/sync.go
@@ -46,13 +46,13 @@ func (s *Storage) syncServers() (err error) {
 	}
 
 	// Eventually write file
-	if s.filepath == "" || reflect.DeepEqual(serversOnFile, s.mergedServers) {
+	if reflect.DeepEqual(serversOnFile, s.mergedServers) {
 		return nil
 	}
 
 	err = s.flushToFile(s.filepath)
 	if err != nil {
-		return fmt.Errorf("writing servers to file: %w", err)
+		s.logger.Warn("failed writing servers to file: " + err.Error())
 	}
 	return nil
 }