If you areunable to get access to your facebook marketplace account, then don’t worry many people face this problem but you can solve this problem by following given below steps:-
Login and logout your Facebook account
Uninstall and reinstall your app
Delete app cache files
If you are using a browser then delete Cache and cookies
Also, we have a lot of solutions regarding Facebook accounts, Facebook ads accounts, and many more.
Related Article:- Unexpected Error Occurred in Facebook Marketplace