The storage-full alert on /settings/storage fires at 90% of your plan's cap.
Two paths out
- Free up space by deleting old media. Click "Free up space — delete old posts →" — jumps to /posts sorted oldest-first. Delete anything you don't need. The Post row + captions stay in your history; only the raw media file is removed.
- Upgrade your plan. Click "Upgrade plan →" — jumps to /settings/billing.
Retention windows
Even without deleting, published post media auto-expires per tier (Free/Starter 30d, Growth 60d, Business 90d, Enterprise 365d). You'll drop under the cap naturally as old posts age out.