Ovo Charge app not refreshing and Zappi not in MNGD mode anymore

Ovo Charge App won't refresh?

Not used my car for a few days and went to plug in to charge just now. 

There's something strange going on - my Ovo Charge app says the car isn't plugged in and if I try and refresh the app it doesn't update. Says the last update was the 10th September. 

If I look at the Zappi charger and go through the menus, although it is showing Eco++ at the bottom of the display screen, there are lots of menu options I can now view that I couldn't before - for example, usually if I click on the Preconditioning section it would say something along the lines of 'Not available whilst in MNGD mode' but now I can access a good few more options such as this that used to be locked out, without that message appearing. 

It's almost like the Zappi isn't talking to Ovo's servers and has reverted to 'dumb' mode. 

I've tried signing out and back into the app, didn't work. Tried deleting the app then reinstalling it and then signing in - still nothing. I've also rebooted the Zappi but no joy either.

Just tried unplugging the car, waiting a bit then plugging back in and now the Zappi is showing some sort of 'Boosting' mode which I've never seen before, and the car is now charging although I guess at full daytime rate rather than the Ovo Charge 14p per kWh. 

If I look in the Myenergi app, it's the same - loads of options now in there that were not available before? 

Anyone else having similar issues?

How do I get my Zappi back into MNGD mode and talking to the Ovo servers and how do I get the App to refresh and connect again?