If I will be trying to change my fetchmail to work with Fedora
version 35 or 36, is this the place where I can post fetchmail output to
get help?

It has worked for more than 20 years with my bbond@cfl.rr.com email
that I lost just over a week ago. I will be wanting to change
.fetchmailrc and/or options to have it work with a spectrum.net account.

Yes, you certainly can.
If the problem is at the mail host and is changed behavior there, we may not be able to help.
I personally will not be able to help much, because I last used fetchmail about 10 years ago, but we have others who use it currently.

Just be sure to surround any terminal output with "code" tags, which become available when you click the "Go Advanced" button beneath the compose/edit post tags. They make terminal output much easier to read.

I am trying to either get a Dell system currently not working to work or
else considering a used laptop or something, on the FedoraForum.

I will want fetchmail to work with Spectrum. It seems to, I just need to
figure out what to change to have it work.

Here is one URL that mentions a fetchmail working with Spectrum:
https://alt.os.linux.slackware.narki...-with-sendmail

Please forgive me, but I do not currently have much time that I can work
on this, very unfortunately. I am a caregiver for my mother; have been
for more than 7 and a half years now. She recently had an amputation
above the knee of her left leg and may be coming home in about a week.
Once she gets back, I will likely not have any time at all. I have many
things I MUST do every day, and most of those are for the health, of me
still now, as well as my mother when she comes home with me. QUALITY OF
LIFE demands I do these things. If I don't do them, we can't even
function. As a result, there are an incredibly large number of things I
would love to do, but can't.

As soon as I start working with it, I'll post the results here (and
frankbell, I'll look for these code tags you mention).

THANK YOU SO MUCH for everyone trying to help me!