FortiClient "Always Up" License ?

Hello,

I use for many years Forticlient free version ( VPN Only) to connect my clients for it support.

For some time for new created connection i can't flag always up checkbox. the client tell me this error:

This feature is unavailable in free versions of FortiClient. You can upgrade to the full version of FortiClient to access this feature. Contact sales to upgrade.

But old connection ( previously configured ) the flag is checked and if try remove it i recevie same error:

This feature is unavailable in free versions of FortiClient. You can upgrade to the full version of FortiClient to access this feature. Contact sales to upgrade.

The Fortigate i connect haven't any license ( some only warranty ).

same thing on PC or MAC.

I' ve tried to uninstall, remove with fortinet tool "fcremove" and reinstall but some thing.

I nedd to enable this "always up" because when i'm connected to intermittent internet connection this flag reconnect vpn autoatically.

Thanks in advance