When I click on my Remote Access, I'm ejected and my remote session is disconnected

Question

Hello,

I am using an IPad in OS Version on 15.7.

I need for working to connect to a Windows 2008 R2 Server.

For this access : I use a VPN Connection with Forti-Client => The VPN connection is working without issues.

After VPN Connexion, I use the app "RD Client" (version 10.4.5 (5227) ) to create an RDP access to the IP of my server. My server is a Windows 2008 R2

The connexion is working because he ask me credentials and I can see my connexion to the server.

But when I'm connected to the remote server, when I make an action (example Open/Reduce a Window). I'm ejected of my remote access and I found in Server my remote session disconnected.

I don't have the problem with another IPad with the same sessions ID (VPN and Remote Desktop)

When I look "RD Client" App parameters : All I see is looking good (by comparaison to antoher IPad where it works)

Can you help me please ?