Bulb In Home Display -IHD Not Working

I have now waited 5 days since having smart meter and still the IHD intermittently works, and keeps disconnecting from wifi.
Does anyone else have issues with reading, and the Customer Identification Numbers blank still?
One minute it shows both gas and electric, then one or the other and sometimes nothing at all.
Wish I never bothered, can you put old meters back?

I have the same problem. One minute it shows electricity details , the next gas and then neither! Switched it on and off many times, moved it, waited… still the same. Would be a great tool if it worked properly. What can we do to solve the issue?