Apologies Sandra, I didn't notice your reply.
I Was using my laptop (Windows 10 and Chrome. Also tried it on Edge). All I could access was the price for 6 months with no discount despite refreshing the page numerous times
The link is still there, (for anyone who doesn't currently have an active sub).
My tried and tested method for a few years now now is to not allow my sub to auto renew, but cancel it a few days before its due to lapse (it will continue to function until the end of the subscription period)
Then, the morning after the sub expires, I log into my account and my account shows I am now a registered guest but no longer a current subscriber (any trees are all still there)
Finally, still logged in, I then click on the link, see the offer and choose the level required and click the `Get Started' button.
That brings up my account details (name etc), shows the correct offer amount for the level I have chosen and a payment screen. Enter the payment details and off I go again for another year.
I have an old expired account with a different user name and email address, so I have just logged into that and got as far as the payment screen to test the link - obviously didn't enter any payment details as I already have a current sub with my newer email and username, but its still functioning just as it has for years.
Boo