Don't get me wrong, I personally don't think it's a bad thing you have to wait for 3 days, if it's to combat bots and hackers. I'm glad you take measures to make it more difficult for cheaters. I'd much rather play without those rather than remove the 3 days waiting time... But.
Why was I not informed of this? Shouldn't there be a large text, some font size 42, saying you have to wait 3 days for it to be activated? Because honestly the 3-day-waiting-time effectively crushes the whole purpose of buying the digital copy online. If the digital copy costs more and it takes a longer time to get, not very many people would buy it, I get it. But for the sake of fairness I think that if you decide to make a system like this, it would be appropriate to also properly inform the customers of the possible cons they have from buying it this way.
I was browsing some stores before and I could have gotten a copy of the game for around 45-50 euros instead of 60, and by buying it from the store I could have gotten the full copy by tomorrow (the stores are closed today).