Page #s won't display in correct sequence ex, 2,1,2

[Syd]

I have a 3 page word document that I'm trying to number. Each time I insert
page numbers it shows 2,1,2. Why is this happening and how can I fix the
problem. I have gone into formatting and specified sequence 1,2,3 and start
at 1 however it's not working.

 

[NYSA-HD]

Sometimes this can happen with section breaks. Do you have a section break
in your document? If it is there and unecessary remove it and renumber in
the header/footer.