Custom maps not visible in game

[Hamsterwheel]

Hey guys, I seem to have a bit of a problem. I just made my first map using the editor and saved it as .yrm in the custom map folder of Red Alert 2. I've selected a particular game type but unfortunately it still doesn't show up in the folder. I've tried this multiple times with several maps but I simply can't get them to show up in game. Any reason as to why I'm having this issue?

Here's a video of the map, the location of the map inside the RA2 directory and me trying to find it in game:

https://youtu.be/KdKa2PZjLrk

Thanks in advance.