Songbook titles too small to read

Apologies if this has been covered elsewhere, but I can't find it! I am a paid subscriber to MuseScore Songbooks and courses, a very useful resource. My problem is that the contents of the Hal Leonard songbooks, which are displayed in a two-page spread, are so small that they are virtually unreadable. And I can't find settings to adjust to a single page spread or to zoom in.

Any advice most gratefully received.