I'm trying to use JMailAlerts on my Joomla 3.3.3 website. I've tried to install for the first time the JmailAlerts version 2.5.1 using the zip package. Apparently, the installation process is successfully completed with no errors. Directories are created and admin links in the components area are created correctly. The plugin is there and it's published. However, when I click on any of the admin links (e.g. Frequencies, Alerts, Sync, etc) I simply get a white page: nothing, not even the admin menu.
Can you help me to understand what is happening? Thanks.