Install and run certbot on Synology DS210j (DSM 5.2.x)

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4

I got it.
Following command issue/renew my certificate on Synology DSM 5.2.x

acme.sh --issue --tls -k 4096 -d _"subdomain.domain.tld"_ --cert-file /usr/syno/etc/ssl/ssl.crt/server.crt --key-file /usr/syno/etc/ssl/ssl.key/server.key