Log having your 4t ff wouldn't work the way it currently is.
The way the server works:
the first person gets put into the red team
The second onto the blue
The third onto the green
The fourth onto the yellow
The fifth onto the black
The sixth onto the white
The seventh back onto the red and so on.
Meaning the way you have the map set up right now, the first two people wouldn't spawn in along with the seventh and eighth persons. You can't auto spawn In on the green team and skip red/blue. It doesn't work like that, but on the other hand, I believe when the game is over and it restarts, I think it might shuffle the people onto available spawning locations, but who ever would join after the game starts would be out into the red and blue team which would cause an error due to the fact that there's not spawning for those two teams.
Look at MoTW 89 has the same exact problem.
I made the map to be as a 2t KoTH with split spawning. But the server has it as 4t cause the third and fourth players to join the game, to glitch out and unable to play.
You can't have a game without red or blue spawns no matter what it doesn't work, unless its an FFA.
I promise you fix your ff map before its served.