Meta Ads Expert Needed to Debug Custom Audience Sharing Issue

We need an experienced Meta Ads expert to help us troubleshoot a simple but specific issue. We already have access to our partners' Custom Audiences inside Meta Business Manager. However, when creating ads, we're unable to select or use those shared audiences for targeting. We're looking for someone who can: Identify why the shared audiences aren't usable. Debug and solve the issue, and share a loom video on how to resolve future errors, so we can use our partners' audiences in our Meta ads. This should be a straightforward troubleshooting task for someone familiar with Meta Business Manager and Custom Audience sharing. To apply, please tell us: Have you solved this exact issue before? What was the cause? How quickly can you help? We're looking to get this resolved as soon as possible. We've attached a Screenshot of the exact problem/error.