Unable to mount USB devices (including Nitrokey) in Linux

Recently configured Poldi for authentication using Nitrokey Storage 2 in Linux Mint. Now I can’t mount any USB storage drives, including Nitrokey and its encrypted partition.
Smartcard with PIN works for login and elevated access.

Error is:
"Unable to mount
Not authorized to perform operation (polkit authority not available and caller is not uid 0)

What policy kit configuration is needed to turn this back for users? (I can still mount as sudo)