Hello,
Please try this tutorial: How to Reset Local Changes
If it doesn’t solve the issue, let us know! Also, if you could provide some screenshots of your Anki main screen and the Browse screen with the tags, that would be really helpful 
Hello,
Please try this tutorial: How to Reset Local Changes
If it doesn’t solve the issue, let us know! Also, if you could provide some screenshots of your Anki main screen and the Browse screen with the tags, that would be really helpful