Hi D4465,
Thank you for reaching out.
We checked your account with the email used here in the community. It shows the account as inactive. Please check with your organization why the account is set as inactive. To reactivate the account, you must contact the Acrobat Sign support team, as it can not be done from our end. Please check with the IT team in your organization.
If the account is inactive, you will not be able to sign the document via this account. For more information, refer to the information in the following help document: https://helpx.adobe.com/sign/kb/not-able-to-sign-the-document-asked-to-login-to-their-adobe-sign-account-adobe-sign.html.
Let us know if you are referring to another account or need help.
Thanks,
Meenakshi