Can you upload a screenshot of your WLAN configuration? (blur or mask any sensitive info). Also provide more detail like
I CAN connect to the provisioning WLAN
I CANT download the app to my phone
There are several configuration steps required for success. Are you connecting first to the provisioning WLAN? From there, you should get an option to download the provisioning app to the phone. Without that app getting installed, you won't connect.
Also make sure you are using a broadcast (not hidden) SSID. For reasons not yet clear, Zero-IT doesn't work in that situation.