Hi @lfbee
I have set up Masking login and 2FA on my lab site and I cannot replicate the same issue. jQuery is not defined error sounds more like an issue with compressing or combining files by some cache plugin with such a feature.
Would you please run a conflict test? Please deactivate all plugins except Defender and check if the problem is gone. If so, then enable all plugins one by one and find which one is having a conflict. If there is no positive result, switch to the default WordPress theme like 2019, and see if it works.
Before this test, we recommend full site backup or running this test on the staging site.
Kind Regards,
Kris
Hi Kris
Thanks for your response, appreciate it.
In the meanwhile I’m also pretty sure it’s a conflict as you mentioned.
As a temporary fix I’m loading jQuery in the wp-login.php file until I can run a conflict test to find the plugin that causes the issue.
You can close the ticket.
Thanks again.