Clicking either of these buttons causes the GUI to crash immediately.
Additionally, the service toggle button turns red and displays a "Service not started" message, even though the service is still running normally in the background, and I can still connect to other users in the networks.
Please assist in resolving this GUI issue.

Please, open Radmin VPN - Help - View Log - File - Save As… -Save and send this file to us.
Please, send us your system information file: :
And what is the average number of nodes in the network of Radmin VPN which you have?
Thank You!