Hi jqh ,
Could you please tell what application you are using to sign the document?
What version of Reader do you have on the Tablet?
Is this happening with a single document or with other documents as well?
I cannot SIGN IN to Document Cloud using my Adobe Reader Android app.
Sign in is NOT the same as signing (with a signature). You did not
understand my problem.
[personal information removed by moderator. See Email signatures and personal information]
I apologize for mistaken your issue with the signature.
Could you please tell if you are seeing any error message when trying to sign in into the app?
What version of Adobe Reader app do you have on Tablet?
Try to turn off the Data Connection/Wi-Fi and connect it again, and then try to sign in and check if it works.