SCCM. All clients are shown as offline (gray icon). In bgbserver.log: SMS_NOTIFICATION_SERVER errors for ssl and sql

=)

Recently I made settings for PXE and sccm site configuration (https communication clients), these edits did not help and I returned everything back. But from that moment on, all clients turned gray and errors appeared in the logs:

1. ERROR: can't retrieve SQL connection. Exception:System.Data.SqlClient.SqlException (0x80131904): A connection was successfully established with the server, but then an error occurred during the login process. (provider: SSL Provider, error: 0 - The target principal name is incorrect.)
2. Failed to authenticate with client [::ffff:192.168.10.230]:60583.
3. ERROR: Don't have SQL connection when get client certificate for client

Now everything is configured over http, but apparently somewhere there is a connection over https. Please tell me how you can solve this problem? What settings should I check?

Thank you in advance