Guild Wars 2

I would feel really bad if i was to open this present, and i dont want to risk getting a ban because of an “exploit” or something, what do?

You’re fine, you can open it without any problems:

https://forum-en.gw2archive.eu/forum/support/account/Details-about-the-Guild-Wars-2-First-Birthday-Gift/first#post2717880

We experienced an issue that affected the distribution of some birthday gifts. Some gifts may arrive a few days after the character’s actual birthday.
The replacement distribution may have given some players a second birthday gift. Using that gift is perfectly ok, and would not be considered an exploit.
We are not able to give second birthday gifts upon request.

Think of it of a nice bonus and enjoy your extra 24 hour booster.

Wow, thanks, thats exactly what i was looking for.