@ridwan RSS is an XML-based format, so no conversation should be needed. But the specific feed in your screenshot is only partially valid. That might cause all sorts of trouble, so we should eliminate the validation errors.
For example, using W3C's Feed Validation Service, we can see the title currently being set to <no value>, and that's not great. Try changing the title by going to Micro.blog's Design page. From there, you should be able to change the Site title to something else.
Then, recheck the feed to see if something else needs fixing.