I cannot launch DiabloIV from PC

Hi,
I just installed Diablo4 on my PC which meets all minimum requirements, first installed on HDD and game was not loading from Battle.net app. I then reinstalled in on my SDD (without graphics pack) to see if it would load there, but still it doesnt load. when i click on Play in battle.net app, it first says Launching and then Playing Now, but then nothing happens and the button returns to Play. I tried scanning and fixing, i removed razer synapse (as i saw that this might be conflicting) but still game does not load.
I have tried re-installing GPU driver, switched off WIndows defender, re-installed battlnet app, closed all running programs, have windows updated. I have no idea what else i can do at this point.

I have the exact same issue.
I tried everything and ended up re-installing Windows. Nothing helps.
Right now, the button says Playing Now - the fans are noisy, but nothing in the task manager other than Battlenet. And no LocaPrefs… that means the game is not even loading.
PLEASE HELP