After submitting a support request, here's the brands that may work for your Vivax:
Akura, Denver, Digitek, Fujicom, Prosonic.
Try them out and tell us if any of them work?
Full credit to Color Tiger, the devs behind the app: Smart IR Remote. If the above info worked, maybe you'd consider supporting them. I'm in no way affiliated with them, just pleased with their apps and support team.
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