iOS Lykke app is broken. Cannot function without update but cannot update either.

This is the second time. Last week it also happened. and I could not access the app for two days. Now again? What is going on? I would appreciate some kind of announcement if something is changing. Edit: appreciate the tips, For now it got solved by itself. I did not need to do anything. Last time I tried deleting/reinstalling etc... that did not work.