Older system is not compatible with app Arming Reminders

Super frustrated to be told by customer service that the option in the app for an Arming Reminder does not actually work with our older SimpliSafe system.  I've spent days trying to figure out why it wasn't working right - including previous calls to customer service where they did not identify the problem.  It turns out that older systems do not support all the functionality that is shown in the app.  How hard would it be to NOT display those options that are incompatible with the system registered in the app?  Or they could even gray those options out and have a note to the effect of 'this option is only supported by the newest systems.'