BbbCan we edit or delete any watermark in pdf flie
Not possible with Acrobat Reader.
Hope you are doing well.
As mentioned by Bernd, this feature is available with the desktop version of the application with a subscription to Acrobat Pro DC.
Since there is a major difference between the interface between a mobile device and a fully equipped computer, there are certain feature limitations with the mobile versions of the application.
If you think this is a feature to be added in the future version, I suggest you fill up the feedback form. Filling the form ensures that your feedback reaches directly to our engineering team to review and try to get it implemented in the upcoming versions: https://acrobat.uservoice.com/
Hope this answers your question.