Hi Norman, Legality taken care of 3 years ago: SS's licencees quite often wouldn't give proper credit attribution to the photographer, sued SS, lost regular pocket money, and my images are no longer all over the place, albeit at least no longer creditfree. As for me being me, yes it's me darkening my own name: (here with Getty) Dona Bozzi Immagini e foto | Getty Images
Legality taken care of, - SS wouldn't sue me for darkening my own credit just for the sake of not having to deal with me anymore -
healing tool replicates and patch, a selection tool, was probably not a good idea to select text. I was saved by the "magnifier", selected the area and curved, looks good That wouldn't be possible without the circle. It would be worth to try the spot healing brush, but "doesn't stay", I should read an article, but for now, why the effect doesn't stay?
By writing that the Spot Healing.correction "doesn't stay" I assume you mean that it doesn't display the correction. I have never experienced that. The cause may be the Mode setting in the Options bar or something more involved.
Luckily, with Photoshop there is usually more than one way to solve a problem. We didn't even try the Clone tool, a technique that uses the History brush set to Darken or some other strategy. You're happy with the result you achieved and that is what counts. Now you can track down the odd Spot Healing result at your leisure.