Switched from E7 to single rate, support can't help with adjusting the ALCS timing

Hi, I have just received email from advisor with same replies:

“I got in touch with a metering specialist in regards to this and they have confirmed that we are not allowed to change a restricted supply to an unrestricted supply and vice versa. A meter exchange would also not resolve this matter.

It has been confirmed that you will need to get a private electrician out to complete this work.”

A few days ago I have asked one electrician who did EICR for me, he said I will need to contact my energy provider to ask them to disconnect it as it’s their equipment.

And now OVO has asked me to get a private electrician? I will need to forward this to my electrician to find out.

This is very strange. A complex metering expert says that OVO are not allowed to change a restricted supply to an unrestricted one, yet a private electrician is. The supplier - who owns the metering equipment - needs permission from somebody to make a change that an ordinary electrician can do at the customer’s request? 

I could understand if the distributor had to be involved in a change like this, which would result in increased power draw during peak hours. Would the electrician have to have DNO permission to alter the wiring? If so, why did the expert not mention this? If not, whose permission other than the customer’s is needed?

We are not being told the whole story here. To my untrained eye, all that is preventing bypassing the Proteus contactor is a couple of SSE sticky labels, applied in lieu of tamper seals. I suppose it’s possible that a meter engineer doesn’t have permission to disable that switch, even though it was a meter engineer who installed it in the first place.

Perhaps the expert could expand on this curious situation.  

I’ll ask again internally & see if we can get some clarity on this ​@Firedog ​@Johnson2025.

AFAIK the reason that we aren't able to change a restricted supply to an unrestricted supply is due to the fact that any connected equipment may not be capable of safely running 24/7, this is why you would need an electrician to make the changes for you 

While this may well be true, it sounds really unlikely to me. Circuits are restricted precisely because they serve heavy loads, often of the order of 20kW, so using them only during offpeak hours eases what might otherwise be an intolerable burden on the distribution network. There is no question of loads like that running continuously in an ordinary domestic setting, unless it’s keeping the nation’s biggest cannabis crop warm.