DLM required after new modem?

[#1]

My line normally sync's at about 54mb however due to a WiFi issues with my router its being returned.

I'm temporarily using an old openreach ECI modem, this is sync'ing at at 30mb, I think this is expected because it doesn't support G.FAST or something.

Anyway I'm expecting a new modem today.  When I plug this is will I need/benefit from a reset of my DLM profile? 

[#2]

I'm sync'ing a little faster but still not near my original speeds and certainly not worth paying for Fibre 'Extra'.

How do I get my profile tested and changed?

Thank You

[#3]

I would really like my profile tested/reset.  I can't seem to find any "contact support" other than telephone plusnet.

Please can someone as plusnet at least acknowledge this and send a link to raise a support request?

I'm paying for fibre extra but not getting it.

[#4]

Thanks for getting in touch @klemm

I've requested your line be reset and this should happen in the next 72 hours.

Let us know if you haven't seen a increase by then