The 'Call Us' and 'Directions' buttons on your homescreen do not pull any information and you get a 'Nothing found' message. This article explains why this happens and how you add a phone number and/or address.
You enabled the 'Call Us' and 'Directions' buttons on your Create -> Design -> Homescreen -> Additional buttons menu.
Nonetheless you noticed that when you click on either of them on the app they contain no information (ie no phone number or address) and you get a 'Nothing found' message.
This happens because, by design, the 'Call Us' and 'Directions' pull information from the data you have inserted in your Contact feature. If you haven't configured 'Contacts' in the Contact Feature, you get the screen above.
Build the Contact Feature and populate therein a telephone number for the 'Call Us' button and an address for the 'Directions' feature. Check the Building the Contact Feature KB article for more information.
The 'Call Us' and 'Directions' will have fetched the information from the Contact Feature and now they will have valid content once you click on them on your app.