I own a chinese Viomi V2 (viomi app) which has been re-flashed with German/European Xiaomi software (Mi Home App) by Viomi itself.
Thus, it registers as a viomi.vacuum.v6 and it seems to work great with your integration! If you need any logs/proof please send me a message, otherwise you can close this issue and mark it as verified :)
I own a chinese Viomi V2 (viomi app) which has been re-flashed with German/European Xiaomi software (Mi Home App) by Viomi itself. Thus, it registers as a viomi.vacuum.v6 and it seems to work great with your integration! If you need any logs/proof please send me a message, otherwise you can close this issue and mark it as verified :)