Ignition SQL log

Dear experts,

After about a year our historian log suddenly stopped working yesterday.
The historical line just remains flat until a few days ago so we can access the data fine it just looks like no new data is being pumped in.

We have had this issue before where the SQL hard drive was full or the transaction log on a different hard drive got full.
After expanding or shrinking the log file everything usually works again except this time.

We’ve tried restarting PC, checking logs, checking disk space but everything seems to be okay.

Do we have any different way of checking why the log just stops adding data?

Ignition V7.9.6 - Database connection is in status “Valid” (connected).
Microsoft SQLServer JDBC Driver

Connection seems to be okay (cous we can access older data, it just looks like new data cant be stored.

Thanks in advance!