If I adjust my Royal TSX database and use the IP address instead of the DNS name then it works fine with an open OpenVPN connection. Because I use Royal TS/X also for work and there also OpenVPN is used I strongly prefer to use DNS names because I don't and can't use fixed IP addresses in every environment.
Hi,
I believe that the workaround (disable TCP keep-alive) described in the following link will resolve your issue:
https://www.royalapps.com/go/blog-ts-mac-rdp-vpn
Please let me know if this helps!
Howdy Ho