There are several reasons that can cause this. Take a look at these first-
- You need to activate your license. If the license it not activated, the plugin won’t work. Please see this to know how to activate the license.
- You need to input the same Access Token, Secret Key and Secret IV in all of your sites. See the Configuration guide.
- Make sure you have the same version of Share Logins and Share Logins Pro installed in all of your sites.
If you still need assistance, feel free to open a ticket here. http://help.codexpert.io/new-ticket/