Did you read what you quote?
The main premise and technical requirement to get into IO is to download app, authorise and have initial charge. Only then you can get onto IO. That's what this snippet says.
But in order to run it - nothing is here about daily usage. You can have scheduled charging starting from 23:30 and then IO will behave the same as if you plug in exactly 5 pm
As per quot in the screenshote, if you read it what it actually says: you give the permission for IO to contril your car and that's it. As the premise is you allow IO control by allowing it to connect to tesla account
There is no where in the Ts&Cs that you MUST charge your car every night and you must plug-in your car every night, and that your tariff will not be valid for household once you are not at home or not charging.