I think this is again a weird case of Many old, unmaintained apps have been archived
It’s weird because only the newest version is affected by this move to the archive.
I’m also a bit confused because the bot actually downgraded the version form 0.7.1 to 0.7.0. The upstream repo seems to be active, but no release has been made since 2014. Could you ask there what’s the current state of the app, if there is a beta/alpha version which might be worth adding to f-droid? In the meantime I’ll see if we can rebuild the 0.7.1 version and fix the version check to not reset it to 0.7.0 again.