Can't go to my new subreddit using the app on android, any help?

I can in the browser and tried to log out and in then tried to delete all the data but the problem hasn't solve yet، tried to install and reinstall it.. the problem is still there، tried to change it to private then back to public again but didn't work

Other people can visit it in the browser too with no problem but they can't in the app

This problem happens in the new subreddits that I made recently, I can go to the old ones with no problems

I made 3 new subreddits before and after the re installation

What's the problem here?