Hi N,
Thanks for writing in.
I checked your site and this is what I am seeing (see secure note):
Would you mind clarifying what do you mean by this:
It would be best if you setup a staging site and do the update from there so that you will be able to test things through without disrupting the live site. In case you are still having problems with the update, kindly login through FTP then edit the wp-config.php file and find this line: define('WP_DEBUG', false);. Set it to true then save the file. When you view the site, you should be able to see some error info. Kindly post the error messages here so that we can provide some suggestions.
In case you’re able to setup a staging site, kindly do the update from there and if the errors persist, please provide the URL and admin access so that we could check it ourselves.
Thank you.