Getting oauth errors on bigin

Getting oauth errors on bigin

Hi Support,
I'm getting oauth errors on bigin even though it works fine with CRM. I created a self client which will add contacts. I gave every permission you could and it still didn't work. What should I do. I might just switch to the standard CRM since it works fine with that one.
ZohoBigin.modules.ALL
ZohoBigin.settings.ALL
ZohoBigin.users.ALL