Nobody replies back and the app is hard to navigate.

I would also suggest to use the nextdoor app for every neighborhood where you own property.

As for an ARM or IO, if you plan on holding for a long time a 30 year fixed amortized loan at similar if not better rates then you are quoting might make more sense. 

We’re looking for:Non-clonable access fobsSecurity camera system for entry pointsMobile app access to doors and camerasFlexible arrangement of times at entry doorsAlerts via the appEasy way to manage tenants, move in/out Residents directory management Can someone recommend a system?

You may also want to go over the app docs they obtained and their screening of the 3 evicted tenants.

It does not send alert to app when something pops up.

Ideally something that is on web/app that'll allow me to keep track of different items come tax time. 

This generation has an app for everything including personal relationships so its not a reach for real estate. 

I also plan on creating a phone app this year that further simplifies the sytem.

Not sure if that supports it, if another app supports it, or if it is fully manual process.