(messy notes ahead)

I used Tor browser only for this test. First: captcha is VERY annoying.
I have to agree with Terms and Conditions. I can't open them in a new tab (my favourite middle mouse button), but instead it opens in a small popup screen. It's on 80% zoom and if I make it larger, the text doesn't fit anymore. I don't have a big screen to read post-it size PDFs.
After reading the first PDF, my captcha expired already. I think I had to go through a total of 5 captchas before I had a working account.

Without reading anything, I jump to Create Offer: Sell 0.1 BTC for XMR:
Error Maximum amount per offer reached for user level
Try again for 0.01 BTC: that works. After I deposit 0.01 (testnet4 to be clear), it keeps counting down from 60 minutes to zero. At this point it would be nice if it detects the deposit. I clicked "Confirm deposit" and now I wait.

I don't like the default Notification settings: I don't need that many emails for anything that happens. The default should be off for everything, so I turned it all off.

For now, I'm waiting for a confirmation, but none of the other offers include BTC and XMR on testnet. Those are the only 2 wallets I setup on my computer, so I can't test any of them now.
I checked other offers, and the first thing I noticed is that "max exchange amount" can't be clicked. It should be clickable to easily buy that offer.