Now it all looks nice and clean - I don't think we can blame it on the main board any more. It seems like a problem with the ESP-01. They are very cheap, mass produced parts and it is possible that one makes a problem.
I think the next step is to see what a substitution does. Do you want to contact me via email and I'll set up an order to deliver you a new one?
So I have the Classic Rev 5 board and everything prior to Firmware Upgrade V1(Firmware V1 upgrade Atmel and ESP-01) worked fine. The upgrade seemed to go without problems, Captive portal configuration worked out fine.
The ESP Blue light indicates running mode status. However, "Communicating with:" indicates "Clock not found!"
“Found I2C slave at” does not appear on the summary page. Any selections made to configure the clock do not make a change in the clock. I did see something in some of the posts concerning the NTP no longer being in business (?), however, the time appears correctly on the summary page. Am I missing something?