Error message in the backend
Warning: Call-time pass-by-reference has been deprecated in /is/htdocs/wp10750454_HLZEA07G0R/www/joomla25v2tools/plugins/vmpayment/systempay/systempay.php on line 90
Warning: Call-time pass-by-reference has been deprecated in /is/htdocs/wp10750454_HLZEA07G0R/www/joomla25v2tools/plugins/vmpayment/systempay/systempay.php on line 99
What is the problem?
PHP version? But you can ignore it as it is only a warning. Turn off error reporting in Joomla Golbal Configuration/Server/Server settings