Google Callback Shows 404 Not Found!

[behzadrahmatzadeh]

Hi all,
I have problem logging in with Google. After user login finished, it redirects to plugin's Google callback file but shows 404 Not Found. I check the plugin's setting page with all OK in overall checkups.
Anybody else faced the same problem with a solution?
Here is the website: https://www.aqabamarket.com