Me and my duo just finished the underworld event on legendary difficulty with all 3 weekly modifiers. At 07:50 PM we started playing the last one with the ult charge circles and managed to win the mode at 08:13 PM. That was the last one I had to complete to unlock the “Underworld Guardian” title. As soon as we won the game I looked at my titles to noticed that i had not received the title even though I won all 3 modifier challenges 
Is there a way to receive the title which I technically should get? contacting support just said to write a forum post … 
They meant on #bug-report…
You can edit your post over there.
Also, lies.
I’ll need direct proof by playing each of the matches with you as one of the players. I, of course, won’t be helping as that would be unfair assistance. I expect 3 wins, or I won’t be vouching for you.
I switched the category to bug report but for the proof of playing … that’s gonna be a bit harder sadly. The gameplay reports were wiped aswell as some of the achievements.
this is all the proof I have sry (hope the links work for this I can’t post links for some reason just erase the “)” ):
Replays - https://)postimg.cc/B8B2XCNy
Event Achievements - https://)postimg.cc/K3MPvhW7
Player Title - https://)postimg.cc/DJY6wgwh