The ewelink 6 application is currently only seen as a graphically improved application against the main application. The absence of language packs (despite the fact that Czech is set, everything is in English) and almost zero device support, including the Sonoff device, make it completely unusable in its current state. I understand that it is a test version, but this is very much a test. At a minimum, all currently supported devices should have been implemented, not this one. I have 160 devices, but maybe 10-20 are supported, so nothing can be tested. At most, the installation does not cause the phone to fall or explode, and that has not happened yet. You really have a lot of work ahead of you to make the application usable and at least catch up with the current one.
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