Hi rokia_1915,
Thank you for the information.
As you do not have an active Acrobat Sign account, you are receiving an error in the application. Also, we do not see any active subscription listed under your Adobe account.
You may ask the sender of the document to remove the sign-in authentication method. Then, you will be able to access the document without any issues.
Or you may try to access the free version through the Acrobat web account. Open the Acrobat web account using the same email address you used for the desktop version. Once logged in, go to E-Sign and select Request e-signatures. See if you can send the document for signature. If it works, then try to open the link again and see if you can access the document. You may refer to the steps suggested in the following help document: Send documents for signature
Let us know if you need any help.
Thanks,
Meenakshi
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