How to add extra SAN on an existed Let's Encrypt Certificate on Synology

Hi,

I have an existed Let's Encrypt Certificate(myurl.com) and I want to add an extra subdomain(sub.myurl.com) on SAN with my synology. I have already double checked with my setup on DNS and CName related issue.

Please kindly help on how to add extra SAN on an existed Let's Encrypt certificate on Synology?

Thanks and Regards,

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Hi @hchan, welcome to the LE community forum :slight_smile:

Your question is very device specific and is likely easier to be answered on a Synology help site than here.
That said, we can still leave this topic open; But I would try opening another one elsewhere as well.

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