The ross-tech sticker looks genuine - but could be faked - this link provides info on the interface and its limitations
https://www.ross-tech.com/vag-com/ol...rfaces/huc.php
Presume you've tried installing the current software version and it's not worked? There's a driver download link in the one above that might help.
I've got an old hex+can cable which works on my 2015 Golf, but didn't work on my neighbour's T-roc
ETA - the more I look at it, the more I think that's a clone. The other side of my cable says 'Genuine Ross-Tech', has a different 'pimple' arrangement, and has security screws rather than Philips
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===SOLD===2002 Audi S8 D2 Final Edition (yes, really) in Avus Silver with purple extended leather===SOLD===
2011 S5 Sportback in Phantom Black with black Super Sports leather, 9x20s, tech pack high, adaptive xenon plus, intelligent key, memory seats pack, sunroof, B&O, Audi Drive Select & quattro Sports Diff, DAB, parking system plus
2015 VW Golf GTI Performance Pack in Carbon Grey with black Vienna leather, tech pack (Discovery Pro nav & Dynaudio), DCC, factory towbar and retrofit RVC
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