Issue with social login

Hello there,
we have installed theme using wordpress 6.0, initially we were facing few issues

• 1. It was like after installing theme and uploading demo content, front end of site went blank, with few changes in header.php file it was get fixed.
• 2. Second issue was with media and it was not displaying any older media in admin but when uploading new it was appearing fine. we have removed all old media and uploaded it again and fixed it.
• 3. Now main issue we are facing is with social login. we are using Facebook and G+ login options. we have correctly configured our facebook app and imported its App ID and App secret in admin, login is working fine but site was not redirected to correct page. same issue is with Google plus login its displaying URL mismatch issue even if we are integrating correct ID and secret.

Can you please assist us what is the issue here?
Thank you in advance.