Trouble changing the home page. Can't find certain text in the text editor to edit it.

I'm having trouble customizing the Edublogs Homepage Theme. For example, this text appears on the home page: "Change this in theme options." But I can't find that text anywhere in the theme files to change it. I also can't find out where to change the number of "Service Headline" boxes that show up.

I'm feeling so frustrated and would love some help.

Do you know how I edit this part of the page?

Best,
April

ps: I tried to add a screenshot, but the