Hopefully I found a solution for some of you...at least it worked for me, but after much frustration and almost selling my cameras! I had a problem where my two Sony mirrorless cameras would not log into the Playmemories App. I had to turn off two-step verification on my account and it finally worked. I can't believe it took me a month of calling like 5-6 times and being sent back and forth between departments to figure this out. No one had an answer until I randomnly reached a tech who knew the problem. 

To say more, on my cameras in the Playmemories App Downloader, I would enter my password, enter the 2-step verification code, and then it would begin to log in and would go back to app home screen. The app would never log into my account and I could not download the apps that really make these cameras worth owning. It wasn't until literally 15 min ago that I spoke with a Sony Entertainment Advisor who solved this after being sent back and forth between Sony Camera service and Sony Entertainment people (aka Playstation). The Sony Entertainment tech randmonly knew what was wrong becuase she individually had just went through it with a customer. I must have made about 5-6 phone calls, talked to at least one supervisor, and scoured the internet to figure this out, then simply lucked out.

Sony, you need to do a better job of managing this. People are paying lots of money for these cameras and you are leaving them in the lurch with your software updates and not relaying the information or making it easy to find. I was about to sell my cameras when this woman saved the day. Next time it takes this long, I won't hesitate to stop being a Sony customer.