Firebase In-App Messaging SDK

[ionutbes]

Hi guys,
I'm testing Firebase In-App Messaging SDK for Ios.
I have two questions :
1. Is it possible to use a proxy between the app and Google Services? we are interested from the privacy perspective to not have direct requests to googleapis.
2. Reading the docs I found: "To conserve power, Firebase In-App Messaging only retrieves messages from the server once per day. That can make testing difficult,". When and how that happens? On app launch?

Thank you