Im not recievng an email from the privaterelay email that has been provided

i have recently purchased some tickets through a website that i used my apple id to log into, i kept my email address private. The website has sent the tickets using the privaterely email address but this has not forwarded them on.

I cant now change the settings on the website to show my current email address

I have checked junk folders etc but received nothing

How can i locate that email, is there a way to login to private relay to retrieve?