stuck tank

Hello. My airflow base is Stuck, i have not used the vape in about half a year. I have tried everything i could think off to get it off, i would appreciate any help. Ty.

i just got my second Pico in the mail today and I'm trying to set it up, but I can't get the top off of the tank! I've tried hot water, pliers, those things used to open jars... Nothing works! For those of you that don't know it's a stupid top fill. I'm screwed! Any suggestions will help me from...