The problem is choosing “original” when going into Photoshop as that will not include any editing done in Develop. Also Lightroom is rendering a new document (usually with the word Edit appended to the filename) so it won’t be the same as the file in your collection.
I would suggest right-click and choose to edit a copy with Lightroom settings. Then add your text and use Ctrl+S to save & overwrite and then Ctrl+W to close in PS and update the LR Library. Then place that final version into your collection.