Paypal is just the payment interface that enables you to pay some bills via debit card- the sats are earned via Fold card and you can take your sats off of Fold so theres zero risk from Paypal here.

There’s been issues in the past where paypal randomly changed some underlying code charges or something where it wasn’t triggering the bonuses but Fold went out of their way to find work arounds (although it eventually went from 1% to 0.5% BTC back) and even added back rewards for prior charges.