Mudfish vpn shows the page is abnormal

Mudfish vpn shows the page is abnormal after opening the program and was asked to update the page, but the same problem still occurs after pressing f5
I ca n’t play ff14 with vpn, is there any way to improve it?

Did you try to use mudfish v4.6.1 which found at https://mudfish.net/releases/ link? I’m not sure that this issue is caused by using mudfish v5 but please test with it when you get a chance.
If you want to use mudfish v5, I think Debugging issue for Mudfish v5 link is helpful too to debug your issue.

For most of cases, this issue is caused by Kaspersky Internet Security.