I just had an Instant Game go through and fail the review process, but the feedback I got was very vague and doesn't provide me with much info. The 2 issues they provided are
"We experienced an issue while testing your app on iOS. Before you re-submit, please make sure that your game loads correctly and does not crash or become unresponsive."
"We experienced an issue while testing your app on a desktop browser. Before you re-submit, please make sure that your game loads correctly and does not become unresponsive."
Then they attached a screenshot that is suppose to help me understand their response better, but it is only a screenshot of the title screen of the game.
I've testing the game on a wide range of devices on the messenger platform, iPhone 6, iPhone X, iPad Air 2, Macbook Air, S7 Edge, PC desktop, the game always loads and plays fine and has never became unresponsive ever.
I submitted the game with an older version of C3 using whatever SDK was in C3 before the r99 release with v6.2, I'm not sure if this has something to do with it.
Anyone else encountering the same problem?