Flux duplication

Recently a stranger added me on ******* and offered to sell me flux, the price was 1$ for 2 million flux each. I've run into one other person selling these prices, and realized they are duplicating. I bought a measly 10 million off them to see if they were at least legit. After some sweet talking, they streamed their screen and showed 1 billion flux in their inventory alone. I tried buying the secret off the stranger, but he or she was German, and there was no way for me to even pay for the secret. They said that only a few people knew about it to begin with.

After my efforts to pay this person for the secret were exhausted, I just decided it's too difficult to find this on my own.

I know this is out there, I'm looking for help to figure this out. If you or anyone else knows who can help, it would go greatly appreciated.