@Maria-LOVES-Animals, we encourage that you troubleshoot
- check your account works on THS website (i.e. is your THS account ok?)
- check that OS on your app device is up to date
- check that THS app (and others?) on your device is up to date
- sign-out of THS app, close app, sign-in to THS app
- delete THS app; restrart device; reinstall THS app
Good luck!