Problem Oth rss feed

Hello ,

Recently I switched from wp.com to wp.org.
Since then, my posts dont appear On bloglovin anymore. According to their helpdesk its because my profile at their level is linken with both an http-feed and a https-feed.
They ask me to fix This, behoren they do an update. Can anyone tel me how to fix This?

Here is the mail from bloglovin:
Hi there,

All posts are here:

https://www.bloglovin.com/blogs/petiteboutdechoucom-19066209

Please be mindful that you have two feeds that are working:

https://petiteboutdechou.com/feed/

https://petiteboutdechou.com/feed/

This feed here is the one that we should be working with since it is on your blog:

https://petiteboutdechou.com/feed/

BUT Bloglovin is using this feed to parse post from your blog:

https://petiteboutdechou.com/feed/

Please make sure that your post are including images. Bloglovin’ determines your profile’s images by fetching the first image contained in each post as represented in your RSS feed.

To fix this, you’ll need to make sure that the featured image of your choice is the first one added to each post with your RSS feed. For help with this, you’ll want to work with your blog provider, or whoever helped you with the technical aspects of your blog. Once this is done, your profile’s images should automatically be updated within 48 hours.

The page I need help with: [log in to see the link]