Android 2.4.2 has a white blank thing in the middle of screen and cannot proceed?

Jul 20, 2019

Don't know if this only happens to me, but every time I open it a white thing shows up and I cannot do anything because of it hovering above. How can this be solved? Is this some sort of advertisement that fails to load itself?
Screenshot go to https://musescore.org/en/node/292405.


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