When I activate the general password, I have to enter the password twice. When I write for the first time, it does not accept. The second time I type, I can log in. I think there is a problem with the plugin.
Could you please make sure that the plugin is updated to the latest version, along with the PHP version? It could possibly be causing issues. You can also check this article on Basic Troubleshooting.
If nothing helps, please provide us temporary admin access to your site so our team can check directly. Please reach out to us by email at support(at)wpfolio.com