Your users may be receiving multiple LoginTC requests because of inadequate timeout values and reconnection settings.
First, check the Request Timeout set on the LoginTC RADIUS Connector:
For an optimal user experience we recommend the following settings on your WatchGuard:
If your users are also receiving requests throughout the day because of an unreliable internet connection (e.g. mobile data or spotty Wi-Fi) then you can also increase the Keep-Alive Timeout value (on the Mobile SSL VPN Advanced tab) to accommodate these connections.
Note: The official SSL VPN WatchGuard client times out after a maximum of 30 seconds during authentication. If your users require more than 30 seconds to launch the LoginTC mobile app and approve the LoginTC request, we recommend instructions your users to open the LoginTC mobile app on their device prior to authenticating. Your users may then refresh the app right after they enter their username and password and approve the request within 30 seconds.
Note: If you are still having problems please contact our support team and we'll help you with your VPN configuration.