Our iOS version is significantly older than our other platforms which is why you're experiencing these issues. We've stopped submitting versions with new coins / tokens to Apple in order to focus on creating a more robust backend infrastructure.
There is a new version coming soon but in the meantime, we would suggest avoiding using your iOS wallet and pairing your current wallet to another platform, such as the Chrome extension, by inputting your 12-word Backup Phrase or displaying your Pairing Code in Menu -\> Tools -\> Pair Devices. You can view our list of available platforms at https://jaxx.io.
We do apologize for this inconvenience. Thank you for your patience and for using Jaxx.