(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:
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 testnet 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.

This sounds decentralized, and I did send 0.01 (t)BTC to your address (tb1qvt3m9trgpw9dlp0su0ca2nctwdxdy6fyqrqsl4), but how can I possiblepossibly check if that's not just an address under your direct control? It looks like a normal testnet address.

Update:

Quote

Deposit Timeout
It means the deposit deadline has passed without receiving the required deposit.

I'm starting to think you're mixing up testnet3 and testnet4: your Beta guide linked to several testnet4 faucets, which made me think that's what you're using, but other parts of the guide make it look like you're using the old testnet. You should probably use the most recent version, which is much easier to get.

(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:

Quote

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 testnet 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.

(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.