word I convert a PDF to WORD format. I have signed up to Export PDF but everytime I try to covert all it asks is that I sign in again and I cant get past it.

convert a PDF to WORD format. I have signed up to Export PDF but every time I try to covert all it asks is that I sign in again and I cant get past ti and the covert button is not available.anyone else having this problem or know how to fix it.