Emergency–Can No Longer Log into my website

I am using your under construction plug-in (have posted an inquiry earlier) and can no longer log into my website.

When I try to log in to my website, I am brought to the under construction page I’ve created. There is no option to log in.

I am using a plug-in to change the web url of my wp-login.php to a custom address (for security reasons). Could that be a conflict? Please help me soon—we have a web launch due a few weeks and I need to be able to access my back-end.

https://wordpress.org/plugins/coming-soon-by-supsystic/