You'll want to move this to the Troubleshooting forum. To do that, just edit your post. At the top of you editing window, click "Duolingo". It is a drop down menu. Select "Troubleshooting" from that menu. Then save the post. It will automatically move itself to the forum you selected. Good luck!

Hi! Can you try uninstalling and reinstalling? Or try restarting the app first? Also, would you be able to give some more information in regards to what exactly you're experiencing?

Hi MustafaKay1 - just following up. What language was your phone in before you switched?