It seems TTI team left behind to update the Frequency Plan for East Asia . I am in the Philippines which supports AS923-3 but I cannot register a device on LoRaWAN 1.0.3 (only possible on v1.1.0).
Other issue is using only two frequency channels instead of eight. Also, mentioned on this thread - Can not use end device using AS923-2 in The Thing Stack - #24 by phitran
I hope the team can have a look
I seldomly used AS923-3 (unless using Helium) since most of our customers are in EU and US.
But I hope this can be updated soon by the TTI team as I recommend TTI enterprise to a local company here who will offer LoRaWAN service.
TIA!