Any ideas how to solve permissions issue for old printer?

I got the drivers for the DeskJet F4400 All-in-One Printer Series from (https://ftp.ext.hp.com/pub/softlib/software12/HP_Quick_Start/osx/Installations/Essentials/ASU/HewlettPackardPrinterDrivers.pkg) Had to change settings in Security & Privacy to get it. Which is compatible on their HP list and the DeskJet F4400 All-in-One Printer Series will print but it's giving me the same - "You do not have permission to open the application "HP Scanner" with error code -(21345) failed to connect to the device" if I try to select scan from System Prefs Printers & Scanners window.

So I downloaded HP Easy Scan which worked great on old computer but not on my new iMac 27" running Mac OS Big Sur 11.5.2 all up to date and only used by me at home. The Easy Scan window appears but that's as far as I can get, gives same permissions error but without the code.

The HP PrinterDrivers.pkg installer's Get Info has my name all lower case no space such as this - firstlast (Me) - Read & Write, staff - Read Only, everyone - Read Only. Of those 3 the only option after unlocking is it will only let me minus staff, no revert for any of the 3, no make firstlast (Me) the owner or revert, for everyone no revert either.

All of my other apps including apps in utility folder have the following in Get Info - system - Read & Write, wheel - Read only, everyone - Read Only.

If I click the + button Users & Guests window pops up, only has option of "Administrators", below that is my name (spelled properly but it's grayed out) but even choosing Administrators doesn't get rid of the error for the scanner it just adds admin to the list with Read Only privileges, makes no difference if I change that to Read & Write for any of them, which makes me wonder if in Users & Groups window, is "Administrators" the heading and my name listed below but grayed out means I have to create a new user for myself?

When I set up new computer I may have skipped something it said I could do later even though I can login using the password I created and I'm the only Administrator, but this issue has me wondering if that's why even though it's the same error issue others are getting on HP forum when trying to use scan.

The Home folder is just my name all lower case, but in Users & Groups it's spelled properly.

I don't want to create a new user unless I have to, only issue is this scan one. I read the Apple page on being careful if adding/creating a new user so I'm leery. Do have/using external Drive for Time Machine.

The reviews for HP Smart on the App Store aren't great but finding a review about the same DeskJet F4400 isn't easy.

Is getting that the only option to try now since I've downloaded/run the installer pkg twice, uninstalled using the HP uninstaller and rebooted twice?

Any help is appreciated!

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