I found that the Font size to be too small, barely readable. How about an inteface option for the user to increase font size? Beyond that, i there a way for the user to increase font size with the current versions?

Same here. Must be some bug. I switched from Mac to Windows and have a 3-screen setup. My mac and a screen next to it are 1920x1080 and set to 100%. I have a third "laptop size" portable screen in between which is also 1920x1080 but since the screen itself is smaller is has been set to 150% so the characters look similar in size to the other two screens.

The characters in MediaHuman YouTube Downloader, especially the ones in the preferences, are way too small to be able to read. It looks like every character is made up out of something like 5x3 pixels or something.