If your box, with OpenPLi 7.1rc, finds all channels without problems using a USB T2 tuner, but not using the tuner module from the manufacturer, how can it be an Enigma problem?
This can't be much more than a driver issue, which VTI has worked around in their Enigma, instead of feeding the issue back to VU+ so the drivers can be fixed. Which is one of the reasons we NEVER work around issues, problems should be fixed where they are created. As long as image builders do this, manufacturers never feel the need to fix their bugs.
Unfortunately, since VTI violates the GPL license and keeps their sources closed, we can't find out what the workaround is, so we can't report the issue either.
Currently in use: VU+Duo 4K (2xFBC S2), Amiko Viper T2C (T2+fallback), Octagon SF8008 (S2+T2), Zgemma H9.2H (T2+fallback)
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Because to health reasons, I will not be active online very often anymore.