uml - Use cases Extends and include - Stack Overflow

I have a not completed diagram of e-commerce order I am not sure of the include and extend relatationship Does this diagram is correct for the attached flow

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UML - Understanding <> in use case diagram - Stack Overflow

uml - Can I include a use case multiple times.. true? - Stack Overflow

February « 2014 « State Space

uml - Extend in use case diagram - Stack Overflow

dependencies - Use Case Diagram - Is this Correct? - Stack Overflow

Process for CI Bad Smell Catalog Creation and Validation

uml - Two actors have same use case but can access different

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Uml uses case diagram suggestion - Stack Overflow