A lot of our templates have buttons built in that say things like, "Buy Now," "Get Started" or "Learn More." You can't edit the text in these button because they don't contain actual live text. A button is technically an image, so it can't be edited like the other text in your email.If you don't want any button in your email, delete the content block that has the button.
If you want to edit a button in your email, use the Button Builder option in the Content Box menu on the left side of the template. Just grab the button and drop where you want it in the email. Then on the right side use the menu to add your text, change the color and size if you like.
We also have some help on creating and using buttons in our helpcenter, just click here.