Complex Watermark Removal

[celest skiff]

I have tried the Content Aware, Spot Heal, Healing Brush and Clone Stamp as combinations. None could even get me started 😞

[hardy verge]

Watermarks like this are used specifically to prevent anyone from removing it. In this case, very complex parts are affected so using any pixel replacement method will not work as those parts cannot be sampled from anywhere else. I would try using curves adjustment layer with a mask on the letters and play with the curves until you retain a workable look. Then you can work further on removing the differences. I would also like to remind you that images like those are not a public property and the only owner is the manufacturer of a product. In this case you might want to contact them about the photo - whether you can use it and if they would be kind enough to send you one without the watermark