Upgrade to AVG ultimate from AVG

I have AVG multi device and want to upgrade to AVG ultimate multidevice. I can see how to purchase AVG ultimate but I want to change my subscription not add the new one. 
Do I cancel the current one first? I suppose I'll then get a new license key?
Thanks


Hello Alan,

We're happy to help.
Your subscription details are listed below,
1, AVG Internet Security (Multi-Device) (10 devices), valid until June 5, 2022; 
2, AVG Internet Security (Multi-Device) + (Gift) BreachGuard (10 devices), valid until April 21, 2022

We can merge your current subscriptions with the AVG Ultimate bundle with extended validity. We request you click on the link below to reach our AVG billing team via live chat or call support to help you get AVG Ultimate at a discounted price. In addition, they'll also merge the current subscription for you. 
https://support.avg.com/support_sales?l=en
Thank you in advance.