Cant do check-in via app

Its not working properly in reservation section.
I was trying to find mine reservation there and all I can see in an error occurring with an information to contact customer care.
So I did and all Ive heard was like: for the moment its not working properly in section of reservations and boarding passes, so I can not guarantee you that youll be able to make your boarding via app.

Long story short: not worth to have it, unless you dont have any other idea to fill your phone storage capacity.

molbroms about Lufthansa, v5.2.0