Here is the site in question.

If you are on iOS then scroll down until you see a “telephone” section, there won’t be a number underneath. This doesn’t happen on computer. I can click on it and it will ask if I want to call that number but its not showing through the orange block. How do I fix it?

We also had edited using Divi, though we don’t know what it is.

Tested on both iOS 14.4.2 iPhone XS and iPhone 11. The text didn’t show on either.
Tested on both Windows 10 and Ubuntu 20.04. The text showed on both.
Tested on Samsung Galaxy tab A, and the text showed.