I realized that Gumroad doesn’t offer a full data deletion! It only remove the personal data like physical address and real names and payments information and it disable the account. But this cause that your personal email address stay there forever on their servers! And Products you bought with the email can you still access over the direct link access. And if you bought with Paypal, the email address is not anonymized in the receipt. Credits card are partly anonymized!
A full deletion process by law would remove the account completly and not disable which you can enable anytime again! All the stuff you bought on Gumroad and is related to the email address should be removed and your are not able to download it again if you linked it in your libary! And all Creator, which has a list who bought their product, the email address and other details should be anonymized. The Paypal Email address which you bought stuff should be anonymized too!
Almost every huge site offers a full deletion, but sometimes hidden in their privacy policy (a link or description how to get a full data removal), because it only counts for the European citizens! Depending if they offer product and such, they first verify if you are the person with login on that account. Afterwards they give you the chance, when you request to erase all your data, 14 to 30 days to cancel this progress.