When I joined ovo in feb 2017 i asked why my monitor displayed estimated costs. I was told the software would be updated soon. Its now 11 months and I gave up several months ago and turned it off because estimated usage is no use to me. I put it back on the other day to see if anything had changed - nope!! What a waste of money. The British Gas one I used to have was 100% better, and your engr told me it was rubbish!!