Thanks for posting on the Community and sorry for the late reply!
@lucapet if you're still experiencing this, we'd recommend following the steps here to log out everywhere. Another good step would be logging in on your Account page and going to ''Apps'' in the menu on the left side. There you can see all third party apps that are connected to your account and we'd recommend that you "Remove Access" for the apps that you don't recognize.
@Giorgiom1 could you let us know if this happens on all your devices? We'll need to know the model and OS versions of the affected devices so that we'd be able to suggest more troubleshooting steps.
We'll be on the lookout for your reply. Let us know if you have any questions in the meantime.
Help others find this answer and click "Accept as Solution".
If you appreciate my answer, maybe give me a Like.