BIG-IP Edge Linux Client with OTP -- token

I need to use a client for connecting using OTP --token-- from Linux. I have downloaded the BIG-IP Edge Linux client that install the f5fc command but I can't log on due to there isn't option for the OTP by CLI and the client on Windows has GUI that open a website for doing it that shows the OTP option, please, give me a solution -- I use Ubuntu 16/18, we can't install Windows due to licenses and the only issue is the VPN Client, I have searched for 2 weeks for a solution and I haven't found a solution yet.