Yes it evens happens to me. But I'm good.
So I put some stuff to sell on the Offer Up app. And right away I had someone who wanted to buy some of my stuff. I looked at their profile and it was a new account that was just opened. That should be the first red flag. This person message me through the app saying they wanted my cell number and would send me a code to prove I am real. Red flag #2!!!. So I got the text and sent them the code. Heard nothing. Then googled this and below is the link on what I Found out. I followed the instructions and used a different number that I use for the scammers. So I am good.
The link above has the info.
I like to think I know it all but hey, I know I don't. But I get to share all this with you.