Could you please allow the connection with OneDrive and OneDrive Business?
As of now there is no direct option in Acrobat application on Android to sign in on one drive to open PDF.
However you can install one drive application on your device. Open PDF in it .
Then use "open PDF in another app" option to open PDF in Acrobat application.
You can also fill the feature request for the same here: Feature Request/Bug Report Form
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