You can only be logged in on one phone at a time
For security reasons, you can only be logged into one phone at a time. If you're signed in on one device and then log in on a new one, you'll automatically be logged out from the first.
You've used "Log out everywhere" in the Parakey Web Portal
Under Logged-in devices in your account settings in Parakey Web Portal, there's a feature called "Log out everywhere". If you've used it, you'll be logged out from all devices where you were signed in.
❗️The "Log out everywhere" feature only applies to the Parakey App. Third-party apps integrated with Parakey that allow you to unlock Parakey devices are not affected.