I can’t click that link. I guess Droid-ify doesn’t handle that protocol. If I try to paste the entire thing into the address field of the “Add repo” screen, it crashes the whole app. Merely pasting it!

I had to separate the bits and do it manually:

Address

http://fdroid.ironfoxoss.org/fdroid/repo

Fingerprint

C5E291B5A571F9C8CD9A9799C2C94E02EC9703948893F2CA756D67B94204F904

Hopefully FFUpdater will add the app to their list soon. And Droidify will probably add the repo to their default list, too.

Honestly, Obtanium might be the way to go.