Well, in that case we’re back to the start then. Without more information the only thing I can do is guess.
The message you’re seeing is probably a 503 error which usually means that your server is not available to handle requests because it’s either too busy at the moment or that its administrator has put the server into maintenance mode momentarily to fix/update/change something.
Assuming that’s it’s the former (the server is getting too many requests and can’t handle them all) and since I can’t see Bimber’s code without buying the theme first (something I won’t do) try switching to a different theme and see if the issue persists or not. I’m making this suggestion because the Bimber theme -as far as I know at least- has copied part of the code from the WPP plugin into their codebase in order to be able to show all of the popular posts sections it has. Their code might not be up-to-date with the latest version of the plugin, something that could be causing performance issues.
If the issue still persists even after switching to a different theme (again, not a theme made by the Bimber team, it has to be a different one) then we can assume that the problem isn’t the Bimber theme itself but the WPP plugin, in which case I have other suggestions but let’s try switching to a different theme first and see how it goes from there.
