F-Droid 1.2.2 - error getting index file

• Device OS and version: Android 2.3.3
• Device model/manufacturer: HTC Desire S
• F-Droid version (in the About screen): 1.2.2
• F-Droid privileged extension version (if installed):

What did you do? (clear steps if possible)

installed the Let’s Encrypt ISRG Root X1 certificate connected to wifi enabling archieve repos

What did you expect to see?

updated repos

What did you see instead?

error getting index file