I have problems receiving a LE certificate for my domain - see details below.
Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. crt.sh | example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
My domain is: nextcloud.spiesmenschen.de
I ran this command: no command, try to get LE certificate using Synology onboard tools
It produced this output: "Connection to LE could not be established. Make sure the domain name is valid."
My web server is (include version): Apache HTTP Server 2.4
The operating system my web server runs on is (include version): Synology
My hosting provider, if applicable, is: n/a
I can login to a root shell on my machine (yes or no, or I don't know): n/a
I'm using a control panel to manage my site (no, or provide the name and version of the control panel): Synology
The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot):