Fatal error: Call to undefined function mb_strtolower() in /home/greenhou/public_html/wp-content/plugins/wangguard/wangguard-admin.php on line 782
Wanng Guard worked fine for the first couple of months, sucessfully blocking sploggers. But now its blocking all users from registering giving the fatal error above.
I have uninstalled and re-installed and still the same error when registering. xisting users can get in, but not new.
Please help - my site is useless now. http://www.greenhoutbay.org