mscz file: no application to open

sorry for my english :)

I downloaded songbook on my Samsung tab s3 (android). If I try to open an mscz file it tells me that there are no applications to open that file type. If I search for a file in the tablet from Songbook, I do not see any .mscz files.
I also have a songbook on a Huawey smartphone (still Android) and it works perfectly ...
Can someone help me?