No push notification OnePlus 8T Android 13

Hi. I downloaded the app today and everything works except for the push messages. I had to set the whole thing via the browser because it didn’t save anything on the smartphone. Why is that because it’s the only app that doesn’t send me a message as soon as there are new messages?

I have the notification settings set to “unread stories and Android”.

Android 13
OnePlus 8T

The RSS feeds were put through the “siftrss” filter and then included in the app (if that might have something to do with it)

I’ve now also added an RSS without the filter to see if that might be the issue.

Thanks for the answers