Do you have your NAS exposed to the public internet? That’s not something that is recommended. Lots of attacks have happened to NAS users who have their units exposed…
Same error message here! I have a ticked open on QNAP-Support. No helpful answers until now. My Lets Encrypt Certificate is for “MyServer.spdns.de”, not the QNAPcloud Certificate.
I have the same problem with my dyndns-domain. Until now my certificate is just valid until july 5th.
Since i pressed the renew button in Qnap the SSL-App tells me I even don’t have a certificate anymore.
To help clarify the issue you’re experiencing, please open a support ticket with us. Our Support Team will be able to assist you in troubleshooting and understanding the problem.