Really bad VPN

I purchased this VPN mainly for China use and it is almost worthless and sometimes worse than worthless since it prevents me from connecting to internet altogether. More than half the time if you have VPN on, my system will not connect to internet at all. I have to turn it off to connect to internet which is extremely inconvenient. I needed it for Gmail and it only works 50% of the time even after restarting multiple times to connect to internet.

VPN for China about Astrill VPN Client, v2.1