Live data and graphs not showing

I’ve recently added an extended data item to the data logged and all was well.
But when I access Live data it defaults to the extended data page , shows the tabulated data but no chart is displayed. When I try to switch to the other views such as ‘Show all’ or ‘Generation data’, the chart key updates but there is no actual graph displayed and the tabulated data remains on Extended data.

I’m sure this was working after I had added extended data for a few days but now it’s been like this for several days. Get the same on Chrome and Edge. However, all is ok if I log out of PVOutput and access my page again. Which makes me think it’s something to do with customisation of my views but can’t figure out what I’ve done.