Purchasing an SSL certificate for more than 1 year is no longer possible. Due to changes in Apple, Mozilla and Google Root Store Policies, as of September 1, 2020, newly issued SSL/TLS certificates with a validity period greater than 13 months (397 days) are prohibited by policy and will not be trusted. Therefore, Dynadot is no longer selling certificates with a duration greater than 1 year. This is all in an effort for security. The shorter the lifespan for SSL certificates, the quicker any new security updates can be made.