Be interested to hear what they did for you. I've deleted and re-installed the app a number of times and it works immediately after the re-installation. Once you come back to it next day, it plays up again. This is on the iPad Pro. Interestingly, I'm not having this issue on an iPad. Seems to be working as it should do.
Same thing happening with me - has been for the past two or three months. Evernote - are you listening? Is there a work around to this problem. I use Evernote on aircraft to prepare documents but since this crashing issue, that has not been possible.