My only issue with Paddle receipts is that they give NO indication of whom the product is purchased from. Without the PayPal receipt I would have a tough time sorting my purchases by developer (when bulk purchasing from multiple vendors).
Perhaps you and the other developers that use Paddle can give them a chat to include the vendor name with the purchases on the e-receipts…
The thing with Paddle is: You buy from Paddle, not from the actual developer. That’s because they are the reseller and take over all the invoicing and VAT handling to the different EU - and Non-EU states.
On the receipt, the only indication of the actual developer is this line: The $ payment will appear on your bank/card statement as: <customisable text>
I double checked: There is currently a known bug in the Paddle Email generation, that there will always be written paddle.com instead of the customisable text. They are working on it already.