NEVER POST YOUR ACCESS TOKEN. That allows people to access data in your account and use your points! We edited it but I would suggest requesting a new one from your user profile and updating it in your apps.
1.2 hasn't been released yet so you must have some weird beta version. Use the latest publicly released version from the App Store for any support.
The iPhone 6S and the Mini 4 are getting old at this point, especially with iOS 12 on it. The OS uses a lot more CPU than it used to and older devices have a hard time keeping up now. We suggest using devices with at least an A10 processor at this point.
Email the CSV file to us at firstname.lastname@example.org