Thank you for the review.
Could you please describe the issue in detail?
You can find all the contact info on the addon page.
The preferred way is GitHub issues https://github.com/olsh/Feedly-Notifier/issues
also, you can contact me by email.

UPD:
I managed to reproduce the issue, sent an email to the Feedly team (it seems like Feedly API issue).
Thank you!