They will just take your money and not activate your account.
You can't contact them securely, because their only support contact is email but the PGP key on their website is corrupted (you can't re-wrap the lines of a PGP key!) and even after fixing the corruption it turns out that they forgot to publish their encryption key (the published key is signing-only).
So there's no secure way to contact them.
Total waste of my time and money. This is why everybody uses Mullvad.
I also don't understand why websites are still using bespoke hand-rolled XMR payment frontends -- unless they are exchanges or (like localmonero) super-Monero-gurus... BTCPay server's Monero support is so good at this point... I have used it uncountably-many times and not once had any kind of problem.
Please folks, if you're going to accept Monero, consider using BTCPay Server.
That requires you to host a server with like 200 GB of blockchain data. Small sellers can't support that.
I recommend CoinPayments.