What happened to my 22k bits?

Question

After clearing my challenges, I started to try unlock pro section content. To my surprise all my bits gathered disappeared.

Answer 1

Try:
- restarting the app
- clearing the app's cache
- updating or reinstalling
- rebooting
- waiting a day or two
If nothing works contact sololearn via the in-app feedback function or per mail to [e-mail]

Answer 2

Thank you Simon Sauter !
In general , I don't sign out.
I did it. After restarting I do get back my bits and now I can use them!