Android app suddenly showing very large daily electric kWh value

My android app was working fine with expected daily kWh readings < 30 kWh but now showing a Friday value of 2600+ kWh! All line graphs from visualisations are normal so the problem appears to happen only on my android tablet. I downloaded & installed the android app on another factory reset tablet & the problem remains. I also noticed that there is no data for today, Saturday, being shown on the My electric app but data for Saturday is shown on My solar app.
The feeds I’m using are:
Power feed (Watts) = grid W
Bar graph feed (kWh) = grid kWh
Wh or kWh Feed = kWh elapsed

Any suggestions?