Used the welcome back boostpackage on the wrong character

Hi,

I’m writing because I made a mistake, and I wanted to know, if I can undo it in some way. it’s about the boost package that you are receiving after you come back from a break from the game, which I didn’t want to redeem on my character, but i accidentally did.

I started playing diablo IV again after a break, and I wanted to continue playing the campaign where I stopped last time I played. This is on my Main Character.
I spent A LOT of time recalling the main story by watching videos and reading recaps, so I could understand what’s going on while I play. And I wanted to have the experience as if I just took of from where I left, so nothing was changed too drastically.
It was going pretty well, and I remembered the mechanics after a little while.
I then pass by the boost package which I was given as a “welcome back”, and because i didn’t know what it was I pressed it, and then my character went from lvl 27 to lvl 50. That would’ve been great if I wanted to lvl up fast, but my intention by starting to play again, was to experience the main story, with the level originally acquired for the quests, and not 25 lvls over. I don’t want to roll over the story too easy - I like the challenge.

So - is it possible to undo the boost, and return my character back to where he was before the boost package? And can I have the boost package back, so I can use it on another character instead?

I hope it’ll work out! Thanks for the attention.

Best Regards,
Ulrik