As an EverNote user I can understand the frustration of all those who have complained here. I was gonna let this issue go, probably like thousands of other users. I couldn't because all I see here is an Evernote expert and "PinkElephant" keeps on playing the blame game.
Issue here on my Evernote : Keeps on logging out of my devices. Android and Mac OS.
I've used apple sign in. I *suspect* that this happens when you update the app or the OS.
No, this is not a network issue. at least not on the client side because I use 1Gbps internet 24/7.
I have used Apple sign in with other apps. Never encountered this issue with those apps.
Being a mobile and desktop app developer, I've implemented Apple sign in a few apps myself. Never had an issue with them. This *bug* is not Apple's fault. period.
Fix this!