Hi, Polina.
I'm sure that there is no problem on RDP-side, I think that RU has some problem on RDP Internet-ID "tunnel".
I make similar RDP-
tunnel on other remote utils (TeamVie-r and other) and there is
no errors.But after some seconds it's disconnected and I can't to reconnect to host.
In local lan or vpn I have no RDP disconnects and errors to connect just after disconnect.