Can't save pdf to Onedrive on my Android Tablet but could a couple days ago

I have been opening pdf file Forms in Acrobat, changing them by filling in the feilds and then saving a copy into my Onrdrive account for the last couple weeks no problem.  Now when I try, the option for One Drive isn't there!  Why?  How do I fix this? Help!  I've been searching the web for bug fixes for hours and don't know what to do. I have completely uninstalled and reinstalled both Onedrive and Acrobat Reader and the same problem exists.  Soooooo frustrated.  I can't still do it on my phone but not my tablet. It makes no sense.  I need this for work. Ugh!