Escalate late approvals, open follow-ups, remind reviewers. Every one is ready to run, and you can adjust it in plain language.
Point campaign reviewers to the current creative file.
Your reviewers see the current asset file in their task, or a clear request to fix a stale link before review.
Show artwork owners which reviewers lack file access.
Your review task shows file access problems before review starts. The owner sees what to fix.