US Instagib server suggestion
Maybe you should try reducing the map vote limit, 18 seems to be quite high, the <//UrS//> server changed to a really high map vote limit, the server died because people didnt want to wait hours just to play a map they like.
I suggest 5-10 limit, don't think it would hurt trying as the server is already dead.
One reason I say this is because I saw someone was going through all random maps in order just to get a map they want to play. It's also annoying not to be able to vote a small map when the server is empty, you have to vote a load of random maps just to unlock a small map.
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https://i.imgur.com/pg8cxYK.png