oh no!! very sorry, i haven't heard of that issue! what OS are you running on? can you try deleting, re-downloading and re-installing?
I tried re-doing everything, no luck. OS 17134.165.
on a desktop, IOS 10
argh, sorry for the trouble! drop me a line at firstname.lastname@example.org with a crash report if you have one + any additional details if you can!