DT to Go stopped Syncing, Errors

I feel that it was working at one point, but tried to use DT on the phone this morning and got the following errors. no clue where to start fixing this. I tried turning on/off the toggles but each step produced an error.

Is DEVONthink To Go allowed to use iCloud (see system preferences)?

do you mean on iOS or mac? It was working before… everything seemed synced, but suddenly…

On iOS (as DEVONthink To Go does not seem to be allowed to use iCloud according to your screenshots)