Every time I go to Dropbox and tap Open with... Adobe Acrobat Reader, Reader says I haven’t authorized Dropbox

After I allow Acrobat to connect, there is no problem accessing PDFs via Dropbox until the session expires. Then I must do this again.

My specs:

Adobe Acrobat Reader 19.10.01 (20191014.172617)

iPadOS 13.2 Public Beta 3

Model name: iPad Pro (12.9-inch) (3rd generation)

Model number: MTFL2LL/A

Thanks for listening.