If you are trying to sell something on Gumroad, as good it might be for some, don't trust it. I got my very first sale last month (a small one, but still a sale) and I was planning to improve the page with more content people could enjoy, but then a few days ago out of nowhere, I received an email from the Gumroad team which notified me there was a dispute related to the purchase/payment and my account has been suspended. Now, while the FAQ page mentions you may experience this issue related to chargebacks, they also state you are free to contact them and complain about it, so that they can help you through it and eventually fix it. However, this isn't what I got when I expressed my disappointment, after reading the buyer could maybe message me and I no longer have an active profile for that. This person from the support basically brushed me off and treated me with superiority even if I was simply trying to understand what happened, the overall explanation has been extremely brief, I've been instructed to check the FAQ (which I did, and there is a clear mismatch between the provided informations) and in the end all I got was "go find another place, good luck".
This is no way to deal with disappointed customers, especially considering that the money they earn from those purchases is LOST. I have been lucky my sale was super cheap, because I read about people losing hundreds of dollars and Gumroad never gave it back despite what their site states.
Maybe you are lucky and the same problem will not happen to you, but considering how many users have been affected I honestly wouldn't bother trying. The customer support is terribly unprofessional and clearly useless when you want your account and money back. Terrible experience.