There is nowhere on the Android app to supply a meter reading,is there another app to Use?
Do you have a Smart Meter?
I so your account is set to SMART so the app doesnt take readings from you as your SMET should send the readings.
If you want to manually input readings you can still do so via a web browser on your phone or PC.
If you do not have a SMET then you should contact Bulb and they can turn the functionality back on to allow for readings to be submitted via the app.