Update - after 2 full days, they were finally able to get it fixed with Porsche - the problem was somewhere in the network and not the Taycan. The tech guy couldn't really explain to me what the problem was or how it was fixed, other than Porsche had them reset the password again and it worked....
Same issue here - took delivery two days ago and still cannot get the PCM to connect to Porsche Connect (says invalid password). The other issue is that without that set up, it seems you have to login as a guest and lose functionality of the software. The dealer has worked on it for two days and...