ECE has 3 different certs you can upload from the UI:
- The API cert (not used)
- The UI cert (for access to 12443)
- The proxy cert (for access to 9243/9343) - this is the one failing for you I believe
The proxy cert has to be wildcarded. So just re-uploading an updated wildcard cert for the proxy should cause everything to start working again (no restarting of any services required)
