Question Locked apps on tablet

johngrey

New member
Sep 3, 2025
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Hello,
Before I close my tablet after use, clicking on the square icon at the bottom right, offers to close apps I used.
But then there are always apps, that cannot be closed that way, or as it seems any other way. They seem to be locked, as at the top right corner, there is an icon of a closed lock.

Protonmail is one of them, QR code is another.

How do I unlock and close these?

Thanks
 

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