Trusted wildcard certificates aren’t available yet. If you got a wildcard cert, you got it from the staging server, which means it’s not signed by the genuine Let’s Encrypt intermediate certificates and won’t be trusted by browsers. That might be the cause of your problem, though if it is, the error message you got is misleading as it seems to indicate a ciphersuite configuration issue.
In any case, answering the questions as stevenzhu has requested should make things clearer. I’ve copied them again below. It might also help to clarify exactly where you’re seeing that error message.
Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. https://crt.sh/?q=example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
My domain is:
I ran this command:
It produced this output:
My web server is (include version):
The operating system my web server runs on is (include version):
My hosting provider, if applicable, is:
I can login to a root shell on my machine (yes or no, or I don’t know):
I’m using a control panel to manage my site (no, or provide the name and version of the control panel):