The escape room submitter is still running and still recommended to keep other directories updated!
The directory was a lot of work to maintain, its accuracy wasn't great, and basic listings didn't seem all that useful when you can just look up escape rooms on any mapping/review site. Sincere apologies to anyone who is disappointed by the closure.
Super extra thanks to everyone who took the trouble to send in updates and corrections!
Below are some of the other lovely directories I've found over the years; maybe some of them will be useful to you. -- firstname.lastname@example.org
Finally, for historical reference, you can check out the last version of the old escape room directory.