Go to the "System Preferences" and "Network" then, follow these instructions:
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Note: Please look bottom page to see the list of IP address.
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IMPORTANT:
1- Make sure your other security software (like antivirus) allowed to VPN.
2- You should try both protocols PPTP and L2TP to find out which protocol could work for you.
Personal (Dedicated) IP service, USA/Ohio - Columbus: usoh.rapidvpn.net
Personal (Dedicated) IP service, USA/California - Canyon Country: usca.rapidvpn.net
Personal (Dedicated) IP service, USA/California - Los Angeles: usla.rapidvpn.net
Personal (Dedicated) IP service, USA/Arizona - Tempe: usaz.rapidvpn.net
Personal (Dedicated) IP service, USA/Texas - Houston: ustx.rapidvpn.net
Personal (Dedicated) IP service, USA/Illinois - Chicago: usil.rapidvpn.net
Personal (Dedicated) IP service, USA/New York: usny.rapidvpn.net
Personal (Dedicated) IP service, Canada - Quebec: caip.rapidvpn.net
Personal (Dedicated) IP service, United Kingdom - London: ukip.rapidvpn.net
Personal (Dedicated) IP service, Netherlands - Amsterdam: nlip.rapidvpn.net
Personal (Dedicated) IP service, Switzerland - Zurich: chip.rapidvpn.net
Personal (Dedicated) IP service, Sweden - Hudiksvall: seip.rapidvpn.net
Personal (Dedicated) IP service, Germany - Munich: deip.rapidvpn.net