locked Problems with JTAlert 2.5.7


I recently updated from a rather old version (2.2) on my Windows 10 PC. That version worked fine.
As required for neatest version, I set up Net 5 during installation process. Now Alerts work, but I cannot query QRZ XML. It is set up correctly under web services. Further when I click “Q” JTAlert shuts down. I also cannot bring up Support function under help. It will not connect.
Thanks in advance
Eli N6PF