The error "Tuxera NTFS could not mount /dev/disk3s1" seems to result from the failure of loading the required kext file. To mount your NTFS-formatted HDD on Mac, try iBoysoft NTFS for Mac instead.
It's an advanced NTFS for Mac driver that powers you to read and write to NTFS drives on Mac. With it, you can access, edit, delete, and transfer files to NTFS drives on Mac like you would with any native macOS drives. It also mounts your drive automatically, saving you the trouble to relaunch the software after a reboot.
Free download iBoysoft NTFS for Mac from the button below, install it, then you can start to access your NTFS drives on Mac freely.
It's also recommended to uninstall Tuxera as it doesn't work well with your Mac. You can find the instruction on its website or from the guide below.
Tuxera NTFS for Mac Could Not Mount External Drives on Mac, How to Fix?
