No Updates for StreetComplete and OSMAND+, no download for FENNEC

I'm using F-Droid 1.12.1 on ANDROID 9. My Problem: No Updates for StreetComplete and OSMAND+, no download for FENNEC. F.e. for OSMAND it's claiming
No Download for https://f-droid.org/repo/net.osman.plus_385.apk
How to fix this? Thank you!

Edited Apr 29, 2021 by Michael

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information