Digital Garden - RSS Problem

My RSS feed to this Digital Garden Website is not working correctly.

Feed Problem 1: the feed has errors and will not be recognized in the re-post tools I'm using in my Microblogging From Obsidian project.

Feed Problem 2: after fixing some errors, the feed is recognized but not validated. It is being seen but several things are not showing up.

More Details

I'm using the W3C Feed Validation Service, for Atom and RSS to check the accuracy of the feeds.
More info on these is below.

Feed Problem # 1

After several hours of chatting with robots and searching, I found out that tweaking the feed template in the Git Hub Repository will make it more valid ...

Using five forward slashes seems to bypass the internal escaping behavior and ensures the template renders a valid self-closing tag in the final XML. This hack produces compliant RSS output.

Ole Eskild Steensen, creator of the Digital Garden Software, says...

This is such a weird bug, because it seem to re appear every now and then and for different people. The file in question, https://github.com/oleeskild/digitalgarden/blob/main/src/site/feed.njk, has closing tags in it. It even has several "/"s because for some reason that has helped in the past. (I've just assumed it was because of the character needed to be escaped or something). Those of you that have these problems, try to tweak that file and report back on what helped. Because I have to admit I have no idea where they disappear. 😅
RSS </link> missing · Issue #136 · oleeskild/digitalgarden

Feed Problem 2

Feed Problem 2: after fixing the errors from problem #1, the feed is recognized but not validated.

It is being seen but several things are not showing up.

For example, no descriptor, no author and other errors.