I confirm your cert is revoked. See this site
Let's Encrypt recently revoked a number of certs that had been obtained using the TLS-ALPN challenge method. Does this apply to you?
Here is a thread explaining why
That said, you say you use Certbot but if you got your cert using that this cannot apply. Certbot does not support TLS-ALPN.
Could you have used the bitnami bncert tool instead?