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. https://crt.sh/?q=example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
Yes, that's what you're doing here. But the support here expects you're going to do some homework and read the relevant documentation that's already been prepared.
One likely issue, though, is that Let's Encrypt won't issue a redundant cert. IOW, you won't be able to issue single cert that contains both *.triple-network.com and (say) sip.triple-network.com. This would be pointless, as *. would include sip., dialin., and the rest. But if you wanted to get the one wildcard cert, and another cert that includes any combination of the individual names, you'd be free to do that.
Ultimately, though, if your web hosting is through a hosting provider (and IPAGE says their hosting includes a free SSL cert), you should probably be asking them about how to go about getting/activating your cert.
Hi, it looks like iPage is a managed hosting provider, which means they need to be the ones to install a certificate for you. A ‘free SSL certificate’ is listed as one of their core features. Your first step should be to contact iPage’s support and ask them how to obtain and install a certificate. Once they’ve given you detailed instructions, if you run into any errors specific to Let’s Encrypt we can help you figure those out.