[olifisz]

did you try with an older ista+ version? i'm trying to solve that too

Well I have also some older ISTA but yet again is about of their software and internal firmware manipulation.

UPDATE

Yesterday I stayed with "factory engineer" on teams for about 3 hrs with dongle hooked to the car, and all they came up to was to install and uninstall their application, of course without solving the problem, constantly complaining about internet speed  ( I have fiber 1 gb up and down),"please change internet " and so on.
I do really believe they do not have a clue how to do it as for this moment.
Then they stopped and went home....nice is it!
Dongle is seen as ICOM and ENET, but ICOM firmware is blocked as in attachment.
With ENET part of dongle you can do almost anything, but I will not trust to do any software update to the car
Anyhow, I will continue to bother them just to see what is going on.

Gentleman I will keep you updated