One of the most common reasons for problems regarding your delta 8 disposable not working is clogging. This happens because of a buildup of condensation inside the cart's airway. Another reason for a clogged-up D8 is chamber flooding. In both cases, you won't get the hit you expect.
But how to fix my Delta-8 not hitting?
Probably the most common cause for a disposable vape pen that won't hit is that it's clogged. Most of the time, a clogged mouthpiece is the culprit. To fix minor clogging, you can pull slightly harder than you usually do until you hear a pop.
Here is a video from Iamsnowruto explain how to fix vape cart not hitting.
Please try to clean the contact point, may you have to pull the contact part out from the vape cart to clean it.