Querying all features doesn't work

[norman-rennhack]

Hey,
trying to query all supported features of my vitconnect via an ioBroker Javascript but I don't get any result returned

Nothing in viessmannapi debug log about this request either.

[norman-rennhack]

viessmannapi is also not selectable from sendTo component in blocky.

[schneiderst]

Same behavior here. Would be happy to help debugging.

[jhg28]

Has the development for this adapter completely stopped.
No updates to all of the open issues since months.