Redeemed the steam client key on the wrong account that doesn't have eligibility to early access

Hi, I didn't realize that the client key that I was given for early access POE2 was just to download the game and I thought it was to grant any account eligibility for POE2. I used the steam key on an alt steam account that doesn't have eligibility and I can no longer redeem my steam key on my main account that has eligibility.

Is there any way to fix this? Please help!

Thanks :)