So I was actually able to figure it out. It seems that when you try to log in with your credentials, it just redirects back to the home page instead of keeping you at the check out page. This happens in Chrome (including incognito), Firefox, and Edge. I was able to overcome this by just doing guest checkout. This then took me back to my checkout page where I was able to proceed and input my code. I then got the new codes for the two games and was able to redeem thoses through the viveport app. Hope this helps.
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