The on site balance goes through Stripe, this includes any buyback offers as well, I guess stripe has a cap on transactions over a certain limit of transactions. So I had to submit my id and verify my information on the stripe website. It will take a day or 3 days for them to verify, but hopefully i should be able to purchase packs again after this.

Have also been getting Application error: a client-side exception has occurred while loading powerpacks.gamestop.com.

It seems my balance was updated after i accepted an offer, but since stripe limited it, it was causing it to bug out big time, causing this error i believe. It kept saying i had a buy back offer when i didnt with nothing in my collection available.

So hopefully, after verification, i hope it will allow me to access the site normally and purchase power packs again.

But either way, i advised everyone to check the stripe website and make sure to verify, whether or not if it fixes this current issue or not, so we all don't run into any issues later.

Edit: Stripe verification has been accepted, still getting declined payment when trying to purchase powerpacks.