Go tho this page: https://www.qualtrics.com/support/survey-platform/faqs/my-projects/ 

You will find the answers for : 

• Someone shared a project with me but I don't see it in my account. Was I supposed to receive an email notification? 
• How do I accept a shared project? 
• How do I rename my project?
• Why can't I edith my shared project?
• How do I assign my projects to a folder?
• Can I restore a deleted project? 
• How do I see the project owner?