Hi @mynetflixtain
As for the “invalid_client The OAuth client was not found.” error.
This error usually occurs when your Google Client ID is wrong, as we mention here:
so please make sure you actually copied the credentials that you need, and you inserted them into the corresponding field at the Settings tab of our Google provider, like we mentioned in the 19th step of the Getting Started guide:
that you can also find in the plugin.
As for the “Request is missing required authentication credential.” error:
Do you see this error when you try to verify our settings?
Since Google usually returns this message, when you try to make a request to an endpoint that expects an access token, but you don’t have the access token.
If you get to that point, but you don’t have an access token in the request, then maybe the problem is caused by a plugin/theme conflict, as a third party doesn’t have a proper condition for their codes, so they might also start running their OAuth specific codes.
You could confirm this problem disabling all plugins except Nextend Social Login, and change your theme to a WordPress default one like Twenty Twenty One, then check if the problem still occurs. If it doesn’t then you should start enabling the plugins one by one or in small groups and check the verification again each time. Once the problem starts occurring again, you managed to find the plugin that causes the problem.
( Maybe the first problem is also connected to this one, as maybe they overtake our OAuth flow by triggering their own redirects. )
