Hello

I would like a partnership with Flatfy.com and for this they need an xml file from my site to display my ads on their website.
To do this, I would ask for help on how to make this xml file for them.
I attach a PDF file describing what they would need.
https://files.fm/down.php?i=8g4zmvvx

I have an xml file like this, could it be good or isn't it what they might think?
https://domain.com/rss-feed/category/listings/

Thank you