This has all the info you need: https://youtu.be/jYE-1HfReQo?si=u1xtmq3jmerfr4P0
I just started using Skiff a couple months ago. I enjoyed the quick alias features and the multiple aliases to keep everything separated. I am really sad to see this happen so soon after joining.
While using Ublock, change your user agent to chrome. Never seen the warning again.
Edit: I use Firefox.