RF pairing using a 4 channels smart switch by Tuya and a RM433-R2fron Sonoff

Hi all,

anyone having troubles trying to pair a Sonoff RM433R2 remote controller to a Tuya 4 channels smart switch with RF feature? It can learn any other RC@433 but the Sonoff one, but the Sonoff does work with its 4CHPROR3 relay box. Any help much appreciated