Have also found this to be true two years later. I have succesfully trained 10 commands (0-9), but when I run on NRF52840 sense, get this message:
09:09:34.009 → Requested feature_data_ size 536871936 doesn’t match 1960
09:09:34.009 → Feature generation failed
The supplied library model.cc also only recognizes the “no” command… ignores “YES”…
any other microspeech tinkerers out there?