Unfortunately, there is currently only supports Google which U2F. I hope and assume that in the near future a lot of services and providers will follow. The configuration and link to the Google account is extremely easy.
Disadvantage: It is only with the Chrome browser as a plug-in is required.
Unfortunately, you can currently only choose whether you want to use U2F or OTP. Unfortunately, two go not.
A decision on U2F one has no way to configure the 2 slot on the stick for OTP. Also NFC with U2F does not currently. Does that mean, U2F goes only via USB.
According to the manufacturer this but soon work and you should then use OTP + U2F.