map not showing in map selection

hi there, not sure if this is the right area for this kind of thread, however there is a mod called rally park that no longer shows in the map selection menu, which is a shame as its a brilliant off-road map to test cars limits with. in the reviews, someone claims to have fixed the map by editing the file, yet doesn't specify exactly how, and after reaching out to them and receiving no response, I decided to make this thread to hopefully find someone who is able to fix the map/show me how to, as I greatly miss this map and would massively appreciate any sort of help with this issue.

again, I'm not sure if this is the right area for this kind of question, so apologies in advance if it isnt

link to rally park thread: https://www.beamng.com/resources/rally-park.8582/