Database in Use too frequently

This happens each and every time I start the app: when I boot, if I quit and then relaunch.

I did that, sent it to Bluefrog. He suggested having good backup and rebuilding database. Haven’t had time to do that safely.
It happened before, stopped, and now is back. Very frustrating

Where are your databases located in the filesystem?

@cgrunenberg
~//Documents//Devonthink Databases

Do you have this option enabled in System Preferences > Apple ID > iCloud Drive > Options