. . . but your PDF shows that your original file is a PSD. It looks like you will have to start over with creating your file. As I now understand your question, you flattened the layers. This makes all text uneditable. It also appears that you have now added a text layer for the Page 6 footer.
Depending on your ultimate goal for this document, you may be able to use a PDF editor to OCR the document and edit the text in that format. But, otherwise, I think you will have to start from scratch. Hopefully, you have learned some valuable lessons from this experience:
- Never flatten text layers that you may want to edit again
- Use the Save As feature to save your edited files before making any edits (such as flattening layers) that make your file uneditable. That way, you can always go back to your editable file with all the necessary layers.
And as I take another look at your document, I suppose it would be possible to cover over or delete the existing text and add new text layers. However, it will probably be faster and cleaner to start this project from scratch.