Why Do some sites not need confirmation

[Raemod]

I have a number of regular sites that I purchased from which do not ask me for confirmation for PayPal transaction.

I do not recall providing an exemption for these site why does this happen.

can it be reversed.

[kernowlass]

@Raemod 

Check your browser settings > autofill and remove sites you don't want the password saved on.

[Raemod]

Than you for getting back just to clarify it’s the sms confirmation which is sent to me prior to submitting the payment.

On a couple of regular sites the sms confirmation is skipped and automatically pays after PayPal is selected.