These appear to be FRS radios and as such should not be able to use a repeater per FCC. That said they do seem to be programmable via Chirp and according to the inter webs are the same as a Baofeng BF888 and use the same Chirp programming. A little research and there seems to be some question as to part acceptance??? 16 channels only, so less than a standard bubble pack yet you can program them, so more than your standard bubble pack. If you’re to follow the rules I can certainly see an issue using these with a repeater even if they do such a thing.
This person that recommended this setup, did they sell the radios and repeater to you?