Hi Shadow, Welcome to the Forums.
I was able to load into the map mentioned above, so I wonder if @itsfield did anything specifically to resolve it…
Whenever I see someone mention Matchmaking Error #1 I like to check the map: 3815-8254-6961
I currently still see the error on that map, and the only way I’ve ever been able to load into the map is with another person in my lobby.
So, I’m curious if you still see this issue with others in the lobby. Also I wonder if you changed any settings in IslandSettings Device → Matchmaking settings. (Changed settings will have an arrow next to them.)
Like Flak mentioned - You will want to add your info to + upvote this thread.