X88 box is made by Shenzhen Zbigstar Technology Co., Ltd. which I only seem to find on AliExpress. They do not appear to have an FAQ page or forum group. Everything I am finding is about 2 years old and most question replies say the poster posted the question in the wrong site, meaning people looking for answers started posted anywhere to find them. Your best bet would be to reach out to the MFGr if you can find a number for them, maybe in your manual, as I was not able to find one.
I'm finding even less on the Greva TV box. Although I did see your question over at XDA, a great resource I might add, they might be able to help you root/jailbreak the device to access these features though.
Aside from advising you to find a name brand or more popular device I'm afraid there is not more advice I can offer.
You didn't answer my questions though, did this ever work on these devices? How did you create these profiles to begin with?
If it never worked on these devices, that could be an indicator that it will not work on them. Which would turn you back to the device that was used to create them. Any chance of getting another one of those units and returning these? If it did work in the past, ensure the box is updated correctly, and also try a second or third attempt at resetting the device. Sometimes glitches or bugs can occur even when factory resetting a device which can be solved by performing the reset multiple times. Seems counter intuitive but I've experienced this myself.