I don't seem to be able to edit my original post unfortunately. So updating here for clarity.
I am running ERA for RMU. I have a home server that I host Foundry VTT on (http://www.onlinegamingrpg.ca). I decided to set up era.onlinegamingrpg.ca, aside from the fancy url, it is no different than anyone else using ERA. I just run ERA-RMU.exe. The URL just forwards to my IP sending it to port 7777.
When ERA is not running, it just sends an unresolved url message to the user as if it did not exist.
I've been running it this way for a few weeks with no real issues (other than wishing it had a log in), however yesterday after rebooting the server, ERA-RMU no longer successfully runs. I double click on the exe like I have before and the CMD window opens briefly, then closes. Because it closes I have no error to validate.