You can adjust the display text size of the Agenda, Inbox, People section and others in Cloze.

In the App Settings section you can adjust the font size used in Cloze.
 

1.) Tap on More (...) in the lower right of your screen on mobile (iOS/Android) and lower left on cloze.com.

 

2.) Tap on Settings

 

3.) In the App Settings section tap on Display and Layout to expand the section. 

Then scroll down to the section labeled: "Font Size" and tap on various options to adjust the text size of the Agenda, Inbox and more in Cloze.