Error Code KAP4CU

Hello, I want to use AVG VPN on my Mac. I’m installing it, but unfortunately, every time I try to connect to a location, I get an error code, and I can’t find a solution. I received the code in the subject line as the final code, but when I try to solve it, it doesn’t solve the problem. Unfortunately, I can’t use AVG VPN to connect properly. Please help me find a solution.

For example, I recently changed my location and tried to connect from Berlin, Germany, but this time it gave the error code ME0013. What determines the difference between these error codes? How can I resolve them? Who can help?