Get PCSC FIDO2 Token working [works with libfido2 and e.g. luks now, but not FF]

I bought a Cryptnox FIDO2 Card and want to use it in Firefox.

I was able to use it with libfido2 with a custom build:
Build with USE_PCSC=ON
after make install, set LD_LIBRARY_PATH correctly.

While I can now use it for e.g. luks, it still doesn’t work with Firefox. It seems that Firefox doesn’t use libfido2 - is that correct? Are there plans to support PCSC?

Best Regards,