Some feeds reseting

Hello,
I have feeds which after some time (about overnight) are behaving like they were added few hours back. For example I have this problem with https://www.animenewsnetwork.com/all/rss.xml . At morning I can see only unread-ed stories for about last 24h. I I wouldn’t open feed longer I would miss some stories.
I am not sure if I explained this properly :confused:

Thanks for help/explanation
Peter

I just subscribed to it here: http://www.newsblur.com/site/6380108/anime-news-network-article. I’ll keep an eye on it and see what happens.

Hi, thanks for reply.
It is working now. I looked at my feeds and only one right now have same issue:
https://filmkult.refresher.sk/rss