"Change my Product" doesn't offer me the new up-to 38Mbps Fibre

[#1]

I'm currently on up-to 80Mbps Fibre unlimited.  Up until yesterday in the member centre I had to option to switch to the lower-cost capped 40GB Fibre service, but today I only see the option to keep my existing product.  Given my sync speed is 35Mbps it seems to be a no-brainer for me to switch to the new up-to 38Mbps Fibre Unlimited.
Is there any reason it's not offered as an option for me in the member centre?
Thanks.
DougM.

[#2]

Are you in a low cost Market 2 or 3 area? This offer is only open to people in lucky locations where they is competition.
If you are captive to BT on a Market 1 exchange, you are out of luck. See the samknows.com website and search for your exchange  if you are unsure.

[#3]

That is not correct - under the legal; bit http://www.plus.net/home-broadband/ Market 1 exchanges are included

Quote

Unlimited Fibre     If you live in a low cost area it costs £17.49 a month, if you live outside one of these areas it costs £24.99 a month Unlimited Fibre Extra     If you live in a low cost area it costs £22.49 a month, if you live outside one of these areas it costs £29.99 a month

[#4]

You need to phone up for the downgrade. 

[#5]

Thanks everyone for the responses, a call it is!

[#6]

Quote from: Kelly

You need to phone up for the downgrade.

I thought only the likes of Sky and Virgin Media allowed easy online upgrades but required a phone call to downgrade, is this a sign of things to come or simply systems not fully updated yet?

[#7]

The systems are fully updated, w23. Unfortunately in this instance to change the broadband package it would need to be a call to Support.

[#8]

Thanks for replying Linn, any particular reason why a call is necessary to change product in this particular case please?

[#9]

It's a complication of in contract changes.

[#10]

Thanks Kelly.