We are aware of the current crash issue for some users - and have uploaded an update to apple that fixes this. It is waiting for approval by apple, which might take as long as a week. We are deeply sorry for those affected!
To those interested: the crash is caused by an extended loading time of resources for the browser (icons, metadata) - the iOS system just assumes the app is crashed if it does not load in time (which can happen with a decent sized library) Unfortunately we did not encounter this issue during our testing, and just learned about it from you.
Again: sorry for the trouble, and your extended waiting period to try the app.