Certificate changes after adding additional data

When I almost use all of my available data, I “refill” using the AstroRelay website so that I never run out. Every time I “refill” data the certificate seems to change and I need to copy the new certificate information to my router. Unfortunately if I am not at the same physical location as the router, I need to travel to it.

Is there a way to “refill” the data without the certificate info changing? Am I doing something wrong that causes this?

Thank you

What do you mean of certificate seems to change and copy the new certificate information to the router?

I assume that the certificate information that is part of the domain is changing. If I uninstall the client on the router and reinstall it then I have connectivity over the VPN again. Currently the Agent Details - Client Status indicates “Disconnected”.

Everything works fine until I try to add more data to my account.