Describe exactly what you are doing, and what happens. Provide details.
Also please state the exact version NUMBER of Lightroom you are using and the exact version number of your operating system.
When I edit, I check
-Dossier Specific ....
- Quality 100
checked with the choice
- Post treatment
Do nothing !
Sorry, I forgot:
Version lightroom CC 2015.5.1 No. 1,073,342
In "Sizing the image" if I choose least 2100 pixels I have my watermark that appears, beyond I have no watermark