A Declined status means the submission was returned or rejected during review.
Saving the corrected declined entry performs the resubmission; do not create another copy just to send it back for review. If you cannot edit it, ask a manager to check permissions and invoice or payment links. Declined does not mean deleted, approved, or paid, and a reviewer must make a new decision after resubmission.
The controls you see depend on your permissions, access to the case, the case status, and the entry's review, invoice, and payment state. If an action is missing, ask your CaseWyze administrator to check these conditions.