Import from OneDrive mostly not working

Hi,

I deleted the app and re-installed fresh.

I am using /media as a folder.

I "imported" the balkans.map (1.6 GB) from a OneDrive folder. It worked (although not on the first attempt), i.e. the map shows in the Locus Map app. Checking with Total Commander, the file is in my /MapsVector folder.

I try to do the same with other maps, e.g. Germany North (2 GB) or Czech (780 MB). This fails after a long (5+ minutes) screen showing "Loading...." and then "Whoops - Code 0".

The OneDrive folder is "Make available offline".

What does "Import" in Locus Map actually attempt to do?

During the long "Loading...." screens, is it failing after a timeout to contact OneDrive, or is it actually importing the file and failing during import? Not sure what I will do with the answer though.

Best,

Armin