The first Nokia watermark can't be edited.
Select the watermark that reads 2018 @ by Nokia 6
Tap to reveal a tiny pencil in the corner of the box > tap the pencil icon.
There is 3 lines available for any text you want.
Not user friendly, but it's there.
There's only a toggle button for the watermark in the photo settings. And the watermark only says, "Nokia." There's no other setting to choose the @Nokia 2018. All I can do is move the watermark around and when I select it there's a white box around it. I have tried long pressing the watermark, double tapping or pinching it but it only allows me to drag it around. There's no pencil icon or 3 lines available for text that you spoke of in your previous comment reply.
Is there a certain way to go to what you're talking about or do I need another update or something else?
After watermark is enabled in the camera settings, with the default Nokia watermark displayed on the screen, tap > in the middle/right side of the viewfinder area to select the Weather or 2018 @ by Nokia watermark.
There's a < in the left side of the viewfinder area to go back.
The Weather watermark can be edited with one line of location info.
The 2018 @ watermark has room for 3 lines with anything you want.
- Tap to display the border box, tap the tiny pencil icon top/left to edit.