LCD not seen by i2c-scanner sketch

Well I think you may have solved my problem.

I changed to another LCD/i2c adapter combo and got the following results almost immediately:

16:21:06.869 -> 
16:21:06.869 -> I2C scanner. Scanning ...
16:21:06.902 -> Found address: 39 (0x27)
16:21:06.902 -> Done.
16:21:06.940 -> Found 1 device(s).

I will now try these components on the HUZZAH32 and the WROOM boards.

I cannot thank you enough for suggesting the UNO.

I will report back with my results later.

Thanks again for you help.