Yep. I got exactly the same problem (also on Android App).It's disappointing to see that such an acute problem is not handled over 8 months after being reported.
I now see that this was asked a month ago and still no response :(
I think I'm in the same position - I login with my Google account so never set a password but that means I can't post comments because it asks for a password I never set.
Customer support service by UserEcho