Roll20 or iPad not scanning game codes or listing games

I'm running version 1.7.0 on an iPad Air 2 running iOS 11.4.1. When logging in the app isn't listing any games I am currently part of and when I attempt to scan the code it appears to register the image and shut of the camera but does not list the game.

Hi Drespar,  Thanks for that, but funny story... I managed to work out what I had done. my app was set for the developer server rather than the main server. Changed it, finds them fine.  Although, when joining the game the character sheets don't work as its trying to launch the charactermancer and won't close the windows or move on from it at all.  But I do appreciate the swift response. Keep up the good work.