Blocked

Yes, you have to wait for a week.

If he commented on your giveaway, you can reply to that comment and he'll get a notification about it. I use that to let people know I've sent them an e-mail.

Write a comment in one of his old giveaways and explain yourself there. If nothing happens wait for a week and ask for a reroll.

Did you ask him / her : why you blocked me through your email !

It's a risk to make lvl0 giveaways...

What I've done is add a key to the giveaway like: CHECK-YOUR-EMAIL

Try sending him another e-mail to make contact. If he doesn't respond then you can revoke the gift (by sending it to yourself) and then ask for a re-roll after a week has passed.

you could try to search for one of his posts like other people suggested and reply there in hopes that he shows up, but i would just give up since you don't need to hunt down people to give them gifts. wait a week and reroll with proof of the email sent and that he blocked you.

if the email he uses doesn't work, it's his problem. and if he doesn't like random adds, it takes 1 minute to check who added you.

End of story guys, he sent me a request and accepted my game, I'm a level 2 now :D