Blink camera serial numbers need resetting

good afternoon everyone- I saw a thread on here where someone had the same issue I’m having. My story—A guy parted his blink camera system thinking the cameras were worth more than the module and could be used separately.
I bought two of the cameras but they say the serial numbers are associated with another account. I’ve contacted blink customer support today, no word back as of yet. in the meantime, has anyone had experience with buying used cameras for the blink system. I figure they are like ST and when you buy a used hub they just reset the passcode on their end