Have you tried gently pulling the small pin on the batt end of the carto out a little bit? Could be bad connection between batt and carto. Also did you shake the juice before filling as the pg, vg and nic will separate while sitting.
Edit: when filling the carto via the PBusardo/ condom way make absolute sure you push the carto down into the juice very, very slowly.
Gonna give the pin pull a try. My Mistic (ugh) is actually hitting better than my ego with boge right now. That is ridiculous. Thank you for your help. I always appreciate and am grateful for anyone who responds. Desperately trying so hard to keep my 30 day as of today non smoking status. But... right now, I am in a bad mood.