Problems with site url feed ( newbie )

hello ,
I am trying to put my blog in my site , too but with no result .

I use a software to build my website who allows to make it which asks me to enter the site feed url ( enter url information for my online weblog ) .

I made a google blog . tried to write just the address of the blog but it does not work .
Subscribed to Atom but it does not work either with the url obtained ...


Is there a difference between Atom and RSS ?

Those are questions put by a total beginner :-)

Thank you if any help is possible

RSS and ATOM are somewhat kinda same, but they have a huge differences.... the development of Atom was dissatisfaction with RSS....there are multiple incompatible and widely adopted versions of RSS...The intention was to ease the difficulty of developing applications with web syndication feeds...

Yes, Atom is quite similar to RSS, but not the same... base on what I have read on xml.com, the
An Atom feed contains one or more entry sections. These are just like an RSS feed's item sections. The entry section, just like the feed's main metadata section, has the obligatory id, title, updated, author, and link. It wouldn't be much use without the content, and it's highly recommended to have the summary, a "a short summary, abstract, or excerpt of the entry."

In addition to those core features, an Atom entry can contain categories and rights information, and an interesting (and unique to Atom) element called source. The source element allows for metadata about an entry's parent feed to be preserved if that entry is copied from one feed to a new one. An example of this might look like:

<source>
<id>http://example.org/</id>
<title>Fourty-Two</title>
<updated>2003-12-13T18:30:02Z</updated>
<rights>© 2005 Example, Inc.</rights>
</source>

More on the optional subelements that can be used in the entry element can be found here.