UPDATE 12/13/2016: THIS company is the biggest SCAM! They sell you fake tickets then try to explain what you did wrong and shouldn't give your tickets to the SECURITY?
This is the actual email from support: "Had you scanned the e-tickets at the correct gates you would have been able to enter the stadium. Trying to scan all the tickets at the same gate would not have worked. We believe the problems occurred when you handed the tickets over to security."
Guess what Footballticketnet.com If you were giving us good tickets they would have found it in the system and direct us to the right gate (we all speak Spanish fluently), but instead we were told the TICKETS ARE NOT IN THE SYSTEM AT ALL! And they wouldn't let us in! So we all flew to Barcelona and didn't see the game we spent 3300 EUR on! We of course contacted the authorities and reported them to the police. Also calling credit card companies to FLAG this seller.

My whole family went to see the Barcelona VS. Real Madrid game this weekend. We bought very expensive tickets that should have been delivered the night before to our friends' apartment. Needless to say we did not receive the tickets (we were instructed they will be member cards) and the next day was instructed to pick up the tickets from a location close to the stadium. We got there received the tickets that were not even in the SAME section (even though we requested it, since we are traveling with kids) and were definitely not member card but printed out online tickets! Since were were already there we tried to use the tickets but were told they are FAKE! Customer service admitted they made some mistakes and we should have received different tickets but they don't want to reimburse us and if they deem it we should get reimbursed they will send us a check eventually! NEVER EVER buy tickets from this website!