There is some bug in Adalo editor which cause the font sizes to change randomly in some period of time.
Reloading the editor helps, but it takes time.
You can get the fonts back to normal by:
- open “Branding” section on the left pane (2nd icon on from the top)
- select “Fonts” from the menu
Here is the video : Adalo quick hints - font sizes glitch - YouTube
Best regards, Victor.
P.S. I hope this post becomes irrelevant soon