Fixing the renew licence bug. Try this

Click on the Extend your licence using Paypal link. Note that the link says £9 for 1 year.

"Renew licence for one year
£9
Buy licence renewal now"

Click on that link to go to PayPal
Note that PayPal says that this is a potential charge of "£12.00 GBP"

From past experience, if you proceed you will be credited with extra fixes, not another year's support.
If you want people to extend their support contract this would be a good bug to fix.
Windows 10 using Chrome.
Also fails on MS Edge and Firefox