Hello Arkindred, apologies for the delay addressing your issues, unfortunately with timezones I was asleep when you sent your message.
I'd like to help you get this sorted out. My first thought was I that could simply refund the extra purchases and we could get things sorted out that way. However, when I went to the payment management tab, I could not find any transactions linked to your account. Meaning, whatever issue caused the erroneous transactions also prevent me from receiving them, consequently I have no power to refund them. This might also explain why you never received an email with your copy of the download, as Itch failed to properly complete the transaction.
Given that I can't access your erroneous payments to put this to right, you'll need to contact itch.io support at support@itch.io to have them reverse the charges and they can hopefully help you out with determining the root cause of the issue. I'm so sorry for the inconvenience.
Viewing post in Billed Multiple times but received no product
I'm glad you were able to get the erroneously billed amount returned. If DriveThru RPG works better for you I'm in the process of getting the product set up for sale there and it should materialize sometime in next 1-5 days, or we could arrange something directly though PayPal if you'd still like to purchase a copy of the module and would prefer not to wait.
I'm sorry the Itch.io store was a bad experience for you.
Hello Arkindred, looks like it won't be terribly long wait. The publishing department just approved my title on DriveThru. Here is the link.
As you surmised, DriveThru does take a significantly larger cut (35% vs 10%), which is why the module is listed at $12 there to help compensate for that lost revenue.