LG uses 4 prong positives, and definitely on their HG2's. Sorry that these do not follow that
I would contact the vendor you purchased those from. I haven't been keeping up on the latest 18650's lately due to a lot going on, but those are not HG2's.
If you can, get your money back, and buy from a reputable vendor.
If you push a battery too far the voltage just collapses, so you will get a low battery warning with a regulated mod pushing a battery too far, but it is not really a good way to stay safe with unknown batteries relying on this to protect you, and some chemistries are safer than others so best to just replace these, even if you do get out of pocket doing so.