I would start with a new coil. Even if it's one you just fired up. It could have fouled.
Drip some juice on the dots with the exposed cotton. Do that several times.
Install the coil. Make sure the air intake holes are closed and fill that sucker about 3/4. Sometimes tanks don't actually like to be full and you may have one of those.
Open air holes. Take a few dry pulls then fire up.
I would also suggest closing off juice flow control before filling the tank--those Protanks 5 sometimes leak when filled with JFC open.
Just my
