I like to use Proton Authenticator, but there is a major problem for me that forces me to use another service. I often require 2FA in cases where I do not have my phone and I am unable to install applications to the computer. Ideally I would be able to access Proton Authenticator through the web, using my hardware OTP. From there I would be able to access OTP for the rest of my accounts. This issue has forced me to use a different provider for an authenticator, which I hate to do, especially since I already pay for Proton.