Client two-step authentication cache doesn't work

Hi, when I use Google Authenticator as 2fa, the authorization cache doesn’t work in my ovpn-client (OpenVPN Connect 3.3.7). But it works in pritunl-client for windows.
Is this normal what cache doesn’t work in non-pritunl client?

There is a less secure cache option labeled OpenVPN Authentication Cache in the top right settings. This cache uses the IP address and MAC address, if these change the cache will be invalidated.

Hi, zach. What do you mean? What is ‘top right settings’?

It is in the top navigation bar of the Pritunl web console labeled settings.

Really?

Those options are only available with the enterprise subscription. Typically the options are used to cache the multi-factor authentication providers available in an enterprise subscription.