Well with kevlar I can guess what's wrong.
The map has ent - game_player_equip -- when you start a round you get equipped with weapons or kevlar if it is specified. But the flag that striprs everything else or any trigger isin't set for it so kevlar should work. Its DM plugins , configs problem I gues :) maybe there is something like txt files or cfg that generates on map symbol starts like de_ cs_ aim_ and so on ;D well I can't say thought

About warm up -- There is nothing in the map that forces warm up or even is related to that.

I'm going to try myself on my server DM and I will write back how it went.

2014-02-06 Sorry I can't test now ---.....---- csgo update ♥♥♥♥♥♥ up servers ;D have to wait for fixes

I created server basic way -- edited warmup time at gamemode_server.cfg -- There was no warmup time ;) So its not maps fault. About kevlar - its not maps fault too. I checked everything within the map. There is nothing that would stop you from using DM with kevlar ;)

maybe you are overlooking something :)

I must be. I was able to edit warmup time in the regular way. I will experiment with the kevlar settings, but I still cannot grasp a reason why my server treats this map differently in that regard...

I appreciate your sending me the modified map file, but I just spent two hours ♥♥♥♥♥♥♥ with game mode files and map groups, only to have my server *pretty much* work how it should. Valve's fault, not yours, but kevlar is not worth my sanity. I'll be running this map from the workshop, thanks.

\o/