I was an early adopter on this new breed of relatively inexpensive Chinese mobile radios that are imported under a few names.
After a few frustrating attempts to program repeater offsets by hand into the unit, a small group of owners worked through it on social media. I did eventually grab a programming cable that works with the 3,5mm jack on the back (which is NOT an external speaker jack, and then discovering that the programming software defaults to Chinese…but has a Chinese menu option for English, I got my local repeaters programmed in. This meant having to calculate the offset for each repeater since the software does not to that by itself.
Happily, these radios are now supported by CHIRP!