One more warning:
FortiSSLVPN/OpenfortiVPN does not work anymore after the upgrade to PPP 2.5.0 … have a look at ppp 2.5.0 breaks networkmanager-fortisslvpn and openfortivpn / Pacman & Package Upgrade Issues / Arch Linux Forums
Working workaround (at least for me) - uncomment ipcp-accept-remote in /etc/ppp/options