Licensing & payments · Managing your subscription
How do I switch from Monthly to Annual or Lifetime?
Short answer: Cancel in the billing portal, let the current period run out, then buy and activate the new plan. Unused time isn't prorated, so switching at period end is best.
Plan changes happen at the end of your current billing period. Cancel your current subscription in the billing portal (Manage Subscription), let the paid period run out, then buy the new plan and activate it.
The unused part of a cancelled period isn't prorated or refunded, which is why waiting for the period to end gets you full value.