It isnt surprising, the estimate from BTw is a very wide estimate because of the wide possible affects of crosstalk. Noone has a right to a crosstalk free line, so its a lottery which end of crosstalk severity you get, if you unlucky on the crosstalk lottery the line is going to be way way below the maximum estimate, yes in 10s of mbits.
The estimate provided by plusnet is not that far above his actual sync speed, on the original days of DLM when we had no g.inp and no xDB profiles, so lines basically started as fast as they could get, there would be immediate merit in raising a low speed fault, but now on hawei cabinets that is no longer the case and estimates will reflect that lines can run at lower margins and with g.inp activated.
It is unfortunate he was advised on here to fiddle with his line so early as I considered that not a good idea, the reason is that DLM will be more sensitive to changes in the first 1-2 days, for that reason alone I would not fiddle with a line at all in that period, and now knowing we have the enhanced DLM for hauwei cabinets, unless there was a very big problem I would not touch the line until the profile settles. Personally I would be keeping it powered up on your break. DSL is an always on technology and this becomes more important when DLM is used.
I am curious what plusnet advised as that hasnt been said yet.
re0 the BTw estimate has no relevance to his contract, only the plusnet estimate does.
He has no contract with BT wholesale. He is a customer of plusnet. So his estimate is 24Mbps to 36Mbps in terms of what his isp is willing to support.