Thanks to an earlier thread from 2019, and the invaluable contribution of @Volusiano, I am happy to share where Data Logging takes place.
It’s in the instruments, and transmitted to the ON App directly.
No mention of external websites is mentioned, that I can find, and all data is stored in the instuments.
Unfortunately @cvkemp and other iPeople don’t have access to Genie 2, where, as you can see in V’s screencaps, all the info is stored in the Data Logging screen.
Here ya go