Played through all the stages.
MOD is safe to use in the story maps and daily sp stages.
Boss Battle stages records your fastest time clearing it. If you use the mod, it will record you with 0 secs clear time. that can easily get a ban.
Ark Defense - Weekly stages is a 30 stage battle. so it's safe to use there.
Event stages, in the current event, you need to do damage to the boss in order to get points. so it will glitch and get 0 points if you use the mod.