The fixes you have purchased work forever; but only on versions of the software released up to a year after purchase.
You can purchase a renewal simply by providing your email address and
credit card details. The charge is processed using Stripe
.
How payment works
When you click Buy fixes your credit card details are submitted directly to Stripe
,
which replies with an encrypted "token" from which the credit card details cannot be
deciphered.
This token is then passed to bliss's servers,
which makes the charge against your card. The server then replies with a licence code
and bliss installs the code itself.
This means your credit card details never hit our servers, in case
you were wondering. They are only sent to Stripe, over an SSL connection for security.