Renewal not possible

Hi, i am not sure what do you mean? can you show some screenshot of the page you are having problems with?

It looks like there is some kind of fatal error which stops page rendering.

In your wp-config.php file add line define("WP_DEBUG", true); then refresh the page, now aside of the text from screenshot you should also see an error message which you can copy and send back to me i should be able to help then.