Thanks mate from this "To be able to accept the Quest Specialist Title Challenge from Dalair you must be LVL30+ and have no other medal challenges in progress! To open the medal window press ;" how do i forgot other challenges in progress? or i have to finish them all?
You are able to forfeit your on-going medal challenges. Open the medal menu with the ";" key, navigate to the specific medal challenge, and click the "forfeit" button in the bottom right of medal summary page. I'm not sure about the consequences of this, like, I am not sure if you will lose progress on the medal you forfeit (although, I have a feeling you won't).