Which phone do you have and is it on the list of compatible devices? click to see
You try anything here on the article for trouble syncing? see if any of this helps - click to read
Best AnswerI just upgraded to a new phone yesterday. I went from a LG Phoenix Plus to a LG Stylo 5.
I just tried my old phone and it worked fine.
So why won't my new phone work?
Best AnswerI don't see the new phone on the compatible list. Is it at least Android 7?
I'm moving this to the Android forum area so you can get more relevant responses.
Best AnswerI'm having the same problem, started after a firmware update on my galaxy s8. Am now logged out of the app and get the message whenever I try logging in. Will try restarting my phone, then uninstalling and reinstalling app.
Best Answer