Unable to view calendar or create an event

Unable to view calendar or create an event

Hello,
 
When i am trying to view mine and other users calendar it says " You do not have permission to view this component as corresponding module has been disabled in your profile settings or in Organize Tabs".
 
It was working perfectly fine and now it appears i dont have permission to access it as well as many other things.
 
I am also unable to create an event in the contact file. How do i fix this as well?
 
Please help.
 
Regards,
 

Brittney Nunez

Scheduling Coordinator

National Building Inspectors

(925)935-6115

Online: www.teamNBI.com