blank overview page

Take a look at the source to the page (normally ctl-u) and check for any fatal errors.

Also check you server’s php error logs to see if there is anything there.

ctrl-u showed a blank page too.

error_log file contained this line

Premature end of script headers: index.php, referer: https://www.madarisna.info/home/wp-admin/wp-statistics.php

What is your script memory limit set to?

memory limit is set to 1028 MB

If you got to the optimization page, what versions/info do you have for:

PHP Safe Mode:
jQuery Version:
cURL Version:
BC Math:

And how many rows in the tables?

Closing due to inactivity.