Keeping Watermark on Page HELP

I have a custom watermark on my custom court papers (court transcript paper)
and when i attempt to "insert page numbers " in using the header/footer
feature, my watermark disappears. This happens whenever i try to insert page
numbers and/or a short title underneath the page number . Any suggestions?
I'm getting very frustrated with this. I've read everything about headers and
watched the "watermark video" and the "header/footer video", but it says
nothing about my issue. Can someone assist?
.