I’m fairly sure they are SMETS1 

These are being updated to SMETS2 and we have seen the odd one or two have problems switching registers

well looks like you can add mine to the one or two!!!   next question when will you roll it back so its correct then upgrade it when the bugs are fixed with the one two no three which have failed

The update is from the DCC not OVO (I’m also just another customer, not from OVO).

Looks like you will need to get in touch with customer support to sort out the meter issues. 
Contact options are a little way down this web page https://www.ovoenergy.com/help

this from DDc info page…… I feel a game of pass the meter  coming on!!!

Almost all of the "dormant" meters which the DCC can proactively identify and upgrade have been migrated to the network. If your meter hasn't been upgraded unfortunately we're unable to provide you with an exact date as to when this will happen. That's because we need to work with the energy companies to migrate the remaining meters: we can't do it on our own. If there is a problem with migrating your SMETS1 meters, your energy supplier will arrange for second-generation (SMETS2) meters to be installed.

I can confirm Secure Liberty 100 is a SMETS1. However, OVO installed those so are capable of communicating with ay of them provided it’s talking to either DCC or Secure’s own in-house Smart Meter System Operator.

And yeah… I’m also just a customer of OVO too. Just a very well informed one

Don’t see why .. it would be in OVO’s interest (and yours) to identify and sort which register is which

Your electricity meter's working in smart mode

Supplier: OVO Electricity Ltd

This means your meter should automatically send readings to your supplier, so you don't need to send them yourself.

It's working in smart mode because you have a first generation (SMETS1) meter that’s on the smart meter data network. The network connects your smart meter to energy suppliers.

my point is that up un till a round a week ago it was correct some one has done somthing with the register in OVO that need undoing I would not complain if they were charging me at off peak rates during peak times (as the header says) lol lol but the billing side is correct its the headers that are wrong!

Yesterday, you wrote “I have managed to get 82% to 98% of my consumption to night rate .“ That’s also what your screenshot shows; the only apparent fault is that ‘Peak energy’ is now labelled ‘Off-peak energy.’ The rates seem to reinforce this. 

If you’re suggesting that in fact you’re not using those 99.85kWh at night, then it looks as if your registers have been reversed. I understand that this has happened to a few other users whose E7 meters have been D&C’d. Correcting it will cost you £6.50 for these ten days ...