suselarun

I already tried with two different browsers plus emptying the cache but no luck.

Yes did.

Done, but still facing the same problem.

Yes tried, but no luck.

Also, deactivated the plugin from the network plus deleted from the server and removed w3tc folder from wp-content folder, removed entries from .htaccess but still having the same issue.

More info about the issue.

I use WP multisite and using customized theme. So not using default wp-signup.php for register.