Hi @bensegal770,
yes, it seems like something redirecting your site after login.
First of all, pleaes check if you have redirection set in Nextend Social Login. Here you can set the redirect: https://nextendweb.com/nextend-social-login-docs/global-settings/#external-redirect
If there was not any redirect set there, it is possible that your theme or one of your plugin make that redirect or it is a virus. You should disable every other plugins and try and you should switch your theme and try. If none of those helps, then your site probably infected.
If you have infection:
What I would suggest you first to reinstall WordPress file. Just to to your WordPress admin area -> Dashboard -> Updates -> Re-install now https://i.imgur.com/dTk05dC.png
It will just reinstall WordPress files on your hosting which will overwrite any modified core files.
Here are a few great tutorials how to clean your infected WordPress site:
https://sucuri.net/guides/how-to-clean-hacked-wordpress/
https://www.wordfence.com/docs/how-to-clean-a-hacked-wordpress-site-using-wordfence/
Ps: Could you delete my profile from your site? Username is: rolandsoos
