Just purchased Lightroom CC and i was able to export Watermarks for a few photos now it wont export any watermarks.
I think i figured it out.
When viewing the exported files in file explorer the watermark is not visible, even at the largest setting.
When i view in Photoshop i can see the watermark.
Can you explain why watermark does not show up in file explorer?
It's a bug -- see this bug report for details: Lightroom: Watermark omitted from embedded thumbnails of exported JPEGs. Please add your vote and opinion to that bug report to make it more likely Adobe will prioritize a fix.