If you had asked me 6 months ago what I thought of Raise I would've given it 5+ stars. It was a great place to sell my unwanted gift cards, rarely had any issues with buyers, and got paid in a somewhat timely manner. That's all changed lately though. Now they're asking for very personal information including my Social Security, and holding my money hostage until I give it to them. I'm sorry, but I don't just give out my SSN number to websites.
Raise it probably a safe place to buy gift cards. I was a very reputable seller, and would never try to rip off a buyer. But I wouldn't recommend selling there. If u do sell there take your money out as soon as possible and don't trust them to hold your funds. They're liable to make you choose between your money or the risk of identity theft.