I own a Synology DS220+ Nas. Unfortunately I have problems, the NAS cannot be connected to the internet.
Therefore I cannot renew the certificate.
Can you please give me a link if I can download it so I can import it manually?
Thanks in advance and best regards
You can do a manual renewal via DNS authentication from any system on the Internet.
From there you will have to copy the new certificate [and key] into the NAS.