Hi Colin and Chuck,
I just got an answer from CiteNet. About a year ago I asked them in an email about uploading to their servers, and they telephoned me back to basically say I could. After all this recent trying to update my site and post it (without success), yesterday, I asked them again by email and they said this (in an email this time):
"Please be informed that this webspace [my citenet website address] is a legacy service and has been discontinued. This service was offered to the customer in the past that allows to use their mailbox storage to host a simple HTML website, here in this case this webspace is associated with your mailbox [my citenet email account].
"We request you to please consider upgrading your current Mailbox Bundle service to our web/email hosting platform HostPath, and you will require to obtain/purchase a domain name for your website. This new hosting platform will allow to use any third-party HTML editor tools to easily edit and manage your website in a very efficient way."
To explain, at one time years ago CiteNet was my internet provider, and my website was hosted by someone else. When I switched to another webhoster, CiteNet gave me a special deal which included webhosting by them and the same email account, but no other perks, like internet services. This special deal was very cheap as a result of the reduced services. But now, I see I cannot upload my edited site to their servers, unless I upgrade. But I had relied on CiteNet's phone call last year saying I could upload my site, when in reality that wasn't part of my special deal with them. I only found this out now.
Now I have to decide whether to upgrade with CiteNet or maybe go with someone else, like WordPress perhaps. Oh, I think my current internet provider only provides me with internet service, and which came with my apartment. But of course I will ask them first to be sure.
Well, looks like yet again I've wasted Techguy's time. But I want to thank you both for your patience with me. I learned so much. Now I will mark this as SOLVED. Sorry yet again, everyone!