Hide My Email forwarding Issues

I made a purchase online and used Hide My Email. The online account used the generated email address as my account address and login ID. Security features on the account email me a code so I can get into my account, but for some reason the address no longer forwards to my real email address. I have tried to email the Hide My address from various other accounts and none are forwarded to me. I have tested other Hide My addresses and they are being forwarded correctly. In addition this Hide My Email was created as a privaterelay.appleid.com as opposed to the other that were created with iCloud.com. How can I fix this. If I have to change the address on the online account I will lose information because of how things are setup.