There's no repository for save files, but you could ask around the Discord. Very slim chance though that someone would have a save file for, I'm assuming you mean v0.8?
Putting very old saves into a very new update can sometimes have issues, but primarily if they're from a beta or other unfinished version.
Also, it seems JoiPlay has some issue in emulation that renders saves unable to be read by PC, although that's only a problem from v0.12 onward, when JoiPlay was introduced as .apk limits were surpassed.
No idea otherwise, closest I know is I once saw someone's old save file on android had a long string of numbers in the save filename, and simply deleting that extra string in front of the actual "1-20-LT1" etc (page 1, slot 20, in that example) made it work.
If all else fails, a restart is not such a bad thing. Runey remakes old events often, especially these last few updates. Hell, he's remade the intro in 0.14, in fitting with the new hotel exterior design.