Issue with shared account, no access to the security base system

Hello All, I'm helping my family member to setup their ring system. Everything is working with the main account, but I run into problem with the shared account. We currently have the doorbell pro and the security base station (including sensors, and keypad). On the shared account, it will only show the doorbell pro, with no access to the security system. Any help with the troubleshooting? I have ring system in my house, and I have no problem with the shared account. everything work