When the app opens, tap on the three horizontal lines at the bottom right corner.
On the Settings screen, tap on Account.
Next, under the Account settings, tap on Content and devices.
Next, on the Manage your content & devices, switch to the Devices tab.
That’s it! You must repeat the same steps for all devices you want to deregister.
From the list of options that appears, expand the Settings section.
Next, tap on the Sign out option.
On the Profile page, tap on the Account.
Next, under the Account Settings, tap ‘Login & Security‘.
Next, under the Compromised account?, tap the Start button.