Songbook + on iPad - font question

[Al Ram]

Hello Friends

I use SongBook+ v3.4.2 on iPad IOS v12.3.1  connected to Genos with latest OS upgrade to display my PDF's. 

For some unknown reason, the SongBook+ font for the MAIN LIST of songs is now smaller . . . . i do not know why because i did not change it . . .

I have been looking in the menu options of SongBook+ and could not find a way to increase the font.   I also searched in the user manual and did not find a solution.

When I increase the iPad font, it increases the SongBook+ font for the menus but not for the main list which is what i want to increase. 

Does anyone know how to increase the font for the main list of songs . . . i do not care too much about the font size for the other menus . . . if I can just increase the font for the main list of songs that would be great.

Thanks in advance.