I was forced to change to the EA App two days ago (Wednesday Feb 8th). I had been happily using Origin until that message ("Now it's time...") finally popped to my screen as well... I never had any major issues with Origin and I liked to use it, so I had made the decicion to just keep using Origin as long as I can, until I'm forced to make the change.
The process of installing the EA App went ok, but after it was installed, there was a message: "Something went wrong. There is a problem with your account."
I don't know what that was about, and it made me nervous, but then it was like nothing happened - regarding that message, because then I was able to log in normally, and everything seemed to be ok: my game (I only have The Sims 4) was showing there and I was able to launch and play my game (I had made back ups of my important The Sims 4 files, just in case, as I do regularly otherwise too, but luckily everything was working as it should when playing my game.)
But later when I was exiting the game, it closed as it should but when it came to the EA App window, it again mentioned a message "something went wrong". I was able to log out but when I was shutting down my computer, there was some problem first, there was a message (I don't remember the wording of that) that there was something stopping the computer to close, and it was some issue with the EA App (some kind of error message). I was able to close the computer little while after.
On Thursday when I was playing, I had a problem that I couldn't get to the Gallery,
I was trying several times, but it just didn't connect and kept saying "Couldn't connect. Try again"). I wonder, is that also because of some issue with the EA App... I rarely had issues getting to the Gallery when using Origin.
Also yesterday, when I exited the game, the EA App again mentioned some problems and then there was also an error message (I don't remember the wording of that), so when it asked that do I want to make an error report, I did, but then... there was this message (which I remember word by word, because I took a photo of it):
"Your error report encountered an error.
We are aware of the excruciating irony of this moment. Bear with us, and try again a little later." ?
Edit: Yesterday (Friday) everything worked well, and I was also able to get to the Gallery. Hopefully it's going to keep working well now.