Bug/Issue Friend's server no longer showing up

I've been playing on a friend's server for a couple weeks. We stopped for a few days, and when we tried to log on again, the server/game file would not show up for me. I tried reentering the invite code my friend sent me, but got a "Connection Failed" page.

I have tried verifying my game files, reinstalling, all the usual fixes. This is really frustrating, as we had gotten a decent way along (into Summer Year 2) and we don't want to have to start over. My friend's game is working fine (and they tried reinstalling as well).

I haven't been able to find a fix for this particular issue on this or any other forums.

Attached save file from friend's server.

 

This save shows as being in Summer Year 1, and there's no cabins on the farm at all.

So, it's either the wrong save. Or if this is the correct save; perhaps a cloud backup overwrote the save and reset y'alls progress.