It is safer to make a debit card purchase using the “credit” option (no PIN used) if the card has a Visa or MasterCard logo on it. That’s because the credit card company’s zero liability protection policy applies to this transaction.
You get better protection, a thief doesn’t get your PIN and you’re not going to get money raided out of your bank account.
And as always, continue to support this infopreneur with whatever you can afford.