For issues you find with the Switch and Console releases, please follow this link and give as much detail as possible. This is the speediest way to get info to Pipeworks and get a hotfix in the works.
For issues you find with the Mobile 1.3 update, please follow this link and give as much detail as possible. This is the speediest way to get info to DR Studios to look at your issue. Also, some troubleshooting hints here.
What makes you assume its related to it not being 64bit? Because it very much is on Mac. Your just assuming the cause of your problem, then getting mad when someone vastly more educated in the issue corrects you.
Again, I will continue to say do not contact Trainwreck for a bugfixed version, I have done the opposite of recommended this and stuff like this is putting me off releasing future spoilers and content on this forum.