Problem with a feed

Fili, shalom and ni hao.

 Could you please tell me what can be the problem with my feed?

Since registering I have written two posts and neither appeared in the aggregator, also in my profile I see that the feed contains 0 posts.

I tried to submit the feed again, but the generated error stated that the feed is already in use.

Zai jian and lehitraot

Thanks in advance, Crystal