"VPN server did not respond"... even though I'm on VPN

I need help with this one. When I'm on PureVPN (no matter which protocol is selected) I almost always will begin receiving error messages from macOS (not PureVPN) about "The VPN server did not respond. Verify the server address and try reconnecting." Normally, I'd assume this meant that there was an issue with the VPN connection and I had been disconnected, however that's not the case. I AM connected to the VPN, it never drops, I have transfers that are uninterrupted, yet this message keeps displaying. In addition to it happening, each time it happens there are 5 windows that display at exactly the same time (and overlap eachother) that all say exactly the same thing, and if you close them a new set of 5 will appear within a few seconds (like there's a retry attempt happening). The only way to get it to stop is log off of the computer or reboot it - exiting the PureVPN app, killing your network connection, restarting the vpnagentd service, etc... nothing will stop it. Someone please help me figure this out, because PureVPN's tech support is absolutely pathetic at troubleshooting.

Here's a screenshot of what the errors come up like. Again, they all say EXACTLY the same thing.