Affiliate name issue

I hit affiliate a while ago, I just haven’t been able to set it up. I finally managed to do the tax forms today and everything went fine, but when I went to do the payment details that’s when it all messed up.

My legal name has an apostrophe, and throughout all of my setting up twitch this hasn’t been an issue. It allowed it in the tax forms, and when I first set up my name and address and such, but when I went to set up my bank details it told me I wasn’t allowed special characters. It also however won’t let me change my last name to not have the apostrophe so I’m not really sure what to do?

If anyone has had the same issue, or knows how to change my personal info on twitch please let me know!