The reason this is not changing when you click Apply Changes using Heading 1 or Heading 2 is because this is more thank likely not a header region, such as a Text region.

This is why it goes back to the original style after you click Apply Changes. To get this to style the way you visually want, you can edit the text within HTML via HTML coding if you are familiar with HTML.

OR

You can cut the text you are trying to use, and paste it into the Header region

To do this:
  1. Navigate to the Puspage Issue, and Edit into the Region
  2. Cut and paste the words you are trying you use into the Header region
  3. Backspace all the pasted words until it all turns to the Header Color
  4. Enter your spaces in the Text as needed, then Cut and paste the words back into the Text Region or wherever you were trying to apply it to
  5. Click Apply Changes
  6. Save the Pushpage