Thanks for your reply. Unfortunately, the inactivity timer seems to be unavailable on the free version. I might be willing to pay a reasonable one-time amount for the Premium version, but 30 euros a year – no, thanks. And I wish to point out that my previous free version did require the password at every decryption! I find that in many new versions of software programs there is a plethora of fancy new features, but truly useful ones often disappear.