ISC-007BW - No data on graph

All of a sudden my ISC-007BW is no longer logging data for the temperature graph. It had been working fine previously. I have tried factory resetting the device and adding it back to my account, but no joy. Does anyone have any experience with this? Thanks.

May I know the app you are using is INKBIRD pro app or INKBIRD app?
Is the screen of ISC-007BW able to display the temperature reading?
Please provide the phone model, screenshot of the chart and your country.

Inkbirg Pro
Yes, the screen of the ISC-007BW accurately displays the temperature.
iPhone 12 Mini, USA

Thanks!

Please recheck the graph. I contacted the engineers and they optimized the app. They tested that it can be displayed properly.

That worked! Thanks.