1. Open Live Listings and click Refresh. This asks eBay for every live listing on your account, including older ones that may not have a matching card in FireCardManagerTCG.
2. If Refresh fails, go to Configuration > eBay > Account and click Reconnect. eBay connections can expire, or stop working after you change your eBay password.
3. For Slabs & Singles, confirm you’re signed in under Configuration > Slabs & Singles.
4. Make sure your PC is online and the right eBay account is connected. Sandbox (test) mode lists to eBay’s test site, not your real store.
5. A listing you ended directly on eBay or Slabs & Singles won’t be relisted. Use Remove in Live Listings to take a card down from one platform.

If something still looks wrong, contact support with the card’s SKU and the platform.