Simplewall UTM?

Does anyone have any experience with Simplewall? I realize there is a small Windows Firewall replacement software with the same name... but that's not what this is about. I'm talking about the "free" UTM software here:

I'm tired of Sophos XG, 100% because of the dynamic IP issues. Many of my DNS servers are behind a connection with a dynamic IP address (this is not resolvable, we NEED these servers hosted where they are for privacy reasons, please dont turn this thread into a critique of that choice). Sophos XG cannot, for whatever reason renew a DHCP address from a cable connection without manual intervention. If you have a solution for this, I'd be glad to hear it.

That brings me to Simplewall. It "looks" enterprise ready and is based out of San Jose (U.S. based is important in this case, so +1 over Sophos). Despite the very low nonprofit price for the Sophos XG, free would be great as well so another +1. Does anyone have any insight or experience using this in a 24/7 production environment?

https://www.simplewallsoftware.com/

Thanks for the help all!