So when you installed Fido you chose Fido2?
It sounds like you are all over this.
Im sure you read the following
Vivokey offers two FIDO Security deployment
options to enable your VivoKey Apex implant or
vearable as a FIDO2 or FIDO U2F authenticatior
token. Our FIDO2 app is still in BETA and should
not be used for anything but testing purposes
Installation of a FIDO app and the VivoKey
attestation certificate will take a considerable
amount of time.
But if you havent seen these, they might be of interest to you
First one has some good info
(Ignore the fact that it says FlexSecure, Its basically the same chip as the ApexFlex, but untethered.)
https://forum.dangerousthings.com/t/applets-universal-two-factor-authentication-using-fido/15952
And especially this one as you seem interested in testing and capable of doing so
Mine is setup for my Spark, I have not tried with my Apex
There is some development/revamp in the Spark area, I dont have the full details, but I BELIEVE The Sparks will benefit from the Apex and be more functional, but it will be limited, as there are limitations with the Spark chip itself, but I GUESS the Apex will get some backward compatibility also.
Of course, I could just be talking through a hole in my arse, so basically, if you cant get it to work just now, I would suggest you wait and see what comes of tge Spark revamp…