Vero V with WDTV Live remote / subtitle and audio keys

Finally I got my Vero V (thank you!).

I’m using this WDTV Live remote:

It has “subtitle” and “audio” keys, which are mapped in the lirc config as:

      KEY_SUBTITLE             0x30CF
      KEY_LANGUAGE             0xB04F

These were working properly on Vero 4k+ (cycling through available subtitle and audio streams), but doesn’t do anything on Vero V. These are (were…) somehow mapped to “CycleSubtitle” and “AudioNextLanguage” kodi functions.

Could anyone help me to get back these functions, please?
Thank you in advance!

What version of OSMC is 4K/4K+ running?
Have you checked Kodi debug log to see if the keys are 1) registered; 2) the same on 4K/4K+ and V?