Can't upload files with Tor browser on Android

With this latest Android Tor version 10.0.6 (83.1.0-Release) (Build #2015737915), I am unable to upload files to my regular cloud storage systems (Woelkli and ProtonDrive). I used to be able to, but no longer, while I can do so using the DuckDuckGo browser.

*I'm new to GitLab. Apologies if I'm posting in the wrong place - please advise!

Thanks!