Your initial purchase gives you access to the bot for 6 months. To continue using the bot after this period, you will need to renew your license.
Your renewal date can be found in the bottom right-hand corner of the bot.
Splashforce renewal costs $60 for 6 months. You can only renew after your key has expired. Expired keys are not currently destroyed but this may change in the future.
To renew, simply visit https://purchase.splashforce.io/renew and enter your key. You will then need to authorize with Discord to prove ownership of the key. You can then enter your card details to purchase the renewal.