The connection through USB should work with the next release, as the bug was fixed. We are trying to fix incompatibilities, but this obviously takes time. Furthermore, OpenPGP through NFC is currently a trade-off decision due to limited persistent memory we have available (which is available during NFC operation). We are investigating options to allow configuring the Nitrokey 3 to e.g. enable OpenPGP through NFC (possibly with the drawback that FIDO2 will then not be available through NFC), but this is nothing I can promise right now.