Custom fonts not displaying

Hello, I have downloaded and installed Lato in several weights and they all show up in the drop down menus like they are supposed to. However, it will not seem to display anywhere on the front of my site. I can see it in my layout page but the live site shows what looks like times new roman and far too small. I have set my text font and all others under Typography>basic to their respective settings and sizes and none of them display on my live site. Changing it in blocks and removing any reference I could find of other fonts hasn’t changed anything either. I have attached screengrabs for you to check out.