Ever got Black Listed in a dungeon before?

[Zerno]

Sorry if there is a thread on this subject but just wondering if its ever happened to anyone else:

So ive been working on getting Warrior and finally got MRD to lv15 and was ready to do my first dungeon run as a tank (naturally i chose Sastasha XD). The run went pretty well, my other 3 party members were in a fc together and didn't really talk that much and I made a few hiccups here and there but no one died luckily, until we got to the last boss. Ive done this fight a bunch of times but never as a tank and its been a while since ive done this dungeon, so i told my party this and asked if there's anything specific i need to do (yes i know its a stupid question) and as soon as i ask them the 3 of them targeted my char and then untargeted and i asked them if everything was ok and they responded in silence which didn't bother me that much since they were like that the entire run.

The fight went smooth but for some reason the healer stopped healing me so i had to keep myself alive with bloodbath and cure (which didnt work out that well) and at the second half the dps didnt pay attention to the gates and 3 sahagins spawned and started attacking the healer, i was able to aggro them so he wouldent get attacked but i couldent keep my health up with 4 enemies attacking me and died because of it. i asked the healer why wasnt he healing me but didnt say anything, i then ask the other 2 if they were paying attention to the gates and and also didnt say anything, after that the healer started tanking the boss and was keeping the 2 dps alive, i then asked if i could get a swiftcast rev since the healer was obviously at a high enough level and again was ignored, near the end of the fight i tell the dps to LB the boss to kill it so we can end the run faster and AGAIN i was ignored and after the boss was killed, the healer and dps left and didnt even bother reving me, so i had to run all the way back without so much as a explantion on wth just happened.

Is it possible i got BLed because i didnt "know" the fight and needed a reminder?