Please let me know how to pay for the 50% off end of the year sale.

I see that you are currently subscribed to the regular Bronze monthly plan. You can subscribe to the 50% end of year sale by first downgrading your account back to Free. Please follow this guide to learn how: How to Downgrade Subscription Back to Free Account

Please make sure that you also cancel the subscription on your Paypal account to avoid getting charged for the bronze monthly again. Here's how: How Can I Cancel My PayPal Subscription?

Once you have downgraded to free and cancelled your subscription on paypal, you should then be able to visit our pricing page and upgrade your account to the discounted subscription plans: https://www.jotform.com/pricing

If you need further assistance, please let us know.
Happy holidays.