After logging in to Socrative through the Socrative Website, click on your initial in the top right corner and click Profile. 

In the Account header, you'll be able to renew your account. You can also adjust auto-renew in this page. Blue means auto-renew is turned on and grey means it's turned off (currently turned on in the screenshot below). 

The Renew License button will appear if your subscription expires in the next 60 days. You will also have up to 30 days after the expiration of your license to turn auto-renew back on and retain your current license and pricing.

A new menu will expand where you can enter in how many seats you'd like and for how many years.

Enter in the coupon code here if you receive an email from one of our promotions. Before proceeding, if you have a coupon code you want to use, now would be the time to do so!

You can also choose to apply a seat to your account this way. Seats corresponds to the number of teachers that can use the license key. Students are always free. The total price of Pro will be shown depending on how many seats and years selected (if you're buying for 3 or more teachers, use the Contact Us link to be eligible for bulk discounts). Once ready, click on Review and Pay. 

Your order summary will be shown. By default, subscription plans will renew automatically in 1 year. Please be aware, you will receive renewal reminders 30, 14, 9, and 1 day(s) prior to your renewal date. If you used a coupon code, your plan will automatically renew at the original price on your renewal date. It will not be the same price if you had used a coupon code.

Enter your payment information (credit card only) and click Purchase. Your receipt will be emailed to the email address you use to login to Socrative. The receipt will include the license key that you can use for your account and to share with your colleagues if you purchased multiple seats.