It says Im using an outdated version

I have nothing bad to say about the app, but I got on a few days ago, and it logged me out. It may of been lack of Internet as I was logging in, or halfway through... I tried logging back in, and it was taking forever, Ive tried a few more times since then, nothing, then it hit me with a notification saying my Scratchy is outdated, please update in App Store, but there is no update for it. So I havent been able to scratch at all, and my 14 day streak is most likely gone.... I need to know how to fix this, Im tempted to back up, then restore my iPhone and have scratchy not come back and me redownload, but I dont want to. Any advice? XD

Logan4630 about Scratchy App, v0.19.3