Plugin Redirect

Hi there. there seems so be a redirect issue when using your plugin on a Multisite network. Some users get redirected to a splash screen with all sites they are connected to and not the WP login screen as applied in the settings. We manage to fix it by adding a function to log the user out and force login again to reset the permissions. Not sure if this will be a good fix since an update will remove that code again. Can you please let me know what can cause this? Thank so much.