Problems with login when plugin is active

Hi, I need your help please.

I don’t understand why while the plugin is active, cannot login, even with the administrator username and password, that isn’t a good practice but is part of my tests. I’m talking about the form that use the theme (You find it on main menu of website – Open in a popup). When I use admin credentials on form …/wp-admin, I can login without problem with enable or disable plugin.

When use form on pupup only show the message “Login failed! Incorrect login or password!” and obviously the credentials are correct.

Register like user is possible when plugin is disable, and login too, but when activating the plugin both functionalities stop working

Please use these credentials to do some test, I will leave the plugin active:
User:
Pass:

Thanks a lot for any help or idea please. Regards!

• This topic was modified 3 years, 7 months ago by rgaleano.
• This topic was modified 3 years, 7 months ago by rgaleano.
• This topic was modified 3 years, 7 months ago by James Huff. Reason: login credentials removed from public forum

The page I need help with: [log in to see the link]