staff.wangcinema.com.au has an A (IPv4) record (119.63.218.247) but a request to this address over port 80 did not succeed. Your web server must have at least one working IPv4 or IPv6 address.
A timeout was experienced while communicating with staff.wangcinema.com.au/119.63.218.247: Get http://staff.wangcinema.com.au/.well-known/acme-challenge/letsdebug-test: dial tcp 119.63.218.247:80: i/o timeout
Trace:
@0ms: Making a request to http://staff.wangcinema.com.au/.well-known/acme-challenge/letsdebug-test (using initial IP 119.63.218.247)
@0ms: Dialing 119.63.218.247
@10000ms: Experienced error: dial tcp 119.63.218.247:80: i/o timeout
A test authorization for staff.wangcinema.com.au to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
Fetching http://staff.wangcinema.com.au/.well-known/acme-challenge/Ax6omn4QScP9jU0ky8SGrMX3ZJ8bzr6xbDs_B7EMUak: Timeout during connect (likely firewall problem)