yep it is a SCAM. I sent my SGL balance from 1 of my wallets to them (tx has enough confirmations and tx id is valid), 48 hours passed and there are no tokens. My Metamask has still 0 balance for this token. I did everything according to their guide. All It was the waste of time :-(
The high gas price on the ethereum has been higher then normal, so the transactions weren't processed. Not a scam. but then its just easier to yell scam then to do any actual reseach huh? 