Speed Booster and Wordfence

Hi,

I urgently need help to fix my WordPress.

Yesterday I installed Speed Booster and ticked all the general options which includes: Remove the WordPress Version, Remove all rss feed links, Remove WordPress Shortlink… Then I deactivated Wordfence because I wanted to replace it for an easier to use security tool.

Now I am having many problems:

1. I cannot access the plugins page. When I click on plugins installed, the page is blank.
2. I cannot update my pages.
3. My Media library is not working well. I have around 100 images in my wordpress and it has duplicated to 34,0000 images.

Please help me.