I am using your plugins for 2 days and I have problem with

I am using your plugins for 2 days and I have problem with add-ons area of the plugins. After I click Activate, the circle is spinning and spinning and goes nowhere. If I refresh page the function is activated. It worries me because I think there is somekind of connection between this and my media not loading (simillar circle is spinning) as I described in my other topic.