Hey Kiro16,

Are you playing on mobile or through the Web on a browser? Can you also take a screenshot when/if the issue occurs again and post it here on the forum?

If it's on mobile, clear the app's data and cache (Android) and after that reinstall the app.
If it's on the web clear the browser's cache and cookies and check if the issue persists. Also try to run the game on other browsers. The supported browsers are: Firefox, Chrome, Opera, Edge, Safari.

NOTE: Moving this thread to the Bugs forum.