Games keeps crashing and lost my save file

Hi everyone , can anybody help me with the bugs I’ve came across. I actually played this game for a long time and stop playing and I’ve noticed there has been some updates since last playing. I just purchased the new weight category’s and since then I’ve not been able to advance on the game with out it crashing. I restarted my phone , closed the app and then eventually reinstalled the game and I had no luck and now I’ve lost my save file. I’m really annoyed because I spent a lot of time on the game and now everything is gone.

Can anybody suggest anything please ?