The capability statemen indicates that the SERVER SHALL support read only on the Coverage resource.  It also SHALL support _include=Coverage:payer.

While the xml of the CapabilityStatement resource is correct, the narrative description includes and example for Fetch and Search Criteria:  and it says:

• A Server SHALL be capable of returning a Coverage resource using:
  GET [base]/Coverage/[id]

• A Server SHALL be capable of supporting the following _includes:
  Coverage:payor - GET [base]/Coverage?[parameter=value]&_include=Coverage:payor

This example should be titled "Read" rather then "Fetch and Search" and the conformance should say:

• A Server SHALL be capable of supporting the following _includes:
  Coverage:payor - GET [base]/Coverage?_include=Coverage:payor

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The reference to [parameter=value] needs to be removed.