No problem. Essays can be very useful in figuring out what's going on.
You say you're vaping 3 mg/ml now. Is that what you used with the Nord as well? Pod systems like the Nord are usually used with (much) higher concentrations of nicotine, which may be why it's not working for you. There are basically three types of vaping with inversely-related juice consumption and nicotine concentration:
- Pod mods - Goes through a tiny amount of juice with very high nicotine concentration
- MTL - Uses more juice at a moderate concentration
- DL - Uses a lot of juice at a much lower concentration
The basic idea is to get roughly the same amount of nicotine regardless of your system. Since the Nord uses so little juice per vape, you need a much higher concentration if you want as much nicotine as you get with your regular vape.