Why Has My Energy Consumption Increased in the Second Month?

If your consumption pattern isn’t reflected in the usage charts, then please do what @Nukecad suggested and look at the figures below the chart, specifically for those first few days in November. It looks as if the data for 3 November and subsequent days didn’t reach OVO for some reason, so estimates were used instead. This is easily checked: the figures in the table below the chart are links to the corresponding Day tab. If data are missing, there will be an estimated figure but it won’t be a link. If you click on the figure or bar for 2 November, you should be taken to the Day tab. If you then click on the right-pointing arrowhead at the top of the page to go to the next day:  

 you’ll probably see an error page. Please try it.

No-one knows how these estimates are arrived at, but they’re never in my experience anything close to reality. It doesn’t matter very much, because the usage data are only for guidance; they’re not used for billing, which is solely based on the meter readings captured each day. You’d better check those as well, because if they’re missing too, your meter may have lost communication to the network.