@Trankery https://git.cloudron.io/cloudron/box/-/commit/b46d3e74d6be94718c3a3df7899dbb6af0b4a407 is the fix for the crash itself.
But the real solution is to move the domain away from Cloudflare OR change the domain provider to Wildcard. Sucks that they made such a big change with no announcement.
@girish so is the process I understand about the installing steps the right way for this? thanks for the suggestion, I just know that we can do my.vpnserver.domain.com. Am intending for consumer use for now.