I do not understand your question, please describe.

I checked it out. Unfortunately, we can not add import without checking on real hardware that we do not have. Can you create a project without importing and check that the driver works correctly with these devices? Then we can add these models at least in beta status.

Can you send your knxproj file?

We did not test these models, but the 774 is the simplified version of the 777, and the 730 should work with the usual KNX driver

Nog i3lite is niet mogelijk om grafieken te tonen. Deze functie zal worden in augustus

No, it's impossible now, but I added it to the development plan.

Looks fully compatible with RPi. Can you try it (RPi version) on Debian system?

First of all - which hardware platform do you use? It is not good solution - transfering code to unsupported platform