It sounds like your IP address could be blocked preventing you from accepting the tickets. Try to access the link from a different computer or cell phone on a different IP address. StubHub called me last week and had a buyer from one of my sales have the same thing happen to him. I had to cancel the transfer and send a new one and he still couldn't access the tickets. StubHub ended up having me transfer the tickets to them and they would forward the tickets to the buyer. Now that transfer worked so not 100% sure why he/you can't access the tickets but it's most definitely not a scam.