Can't login to Playstation network

For months I have the issue, that Minecraft says I should log in to PSN. When I press the button I see sometimes a window for < 1 sec or nothing happens.

I've already tried to reinstall Minecraft (I had also deleted the app data), but nothing changes.

Only for one time some weeks ago I was able to log in, but after the next Minecraft start, I had the same issue.