End war

After selecting to end a war... how long before the war ends? Does it usually take a day to process

That feature seems to only work for PVP. C3 wars will just expire after a while, if you don't attack.

all wars end after 24 to 32 hours if there is no activity.

Could you check Oak island on TA, It's been awhile and that war won't end. I can't test your mods, until it does.