Having a problem while Testing SKAdnetwork

Hello, I have 3 questions.

  1. According to specification, it says to ignore subdomain, but if there is subdomain as follows, does it mean that SKADNetwork did not send postback? ex) test1.example.com.
    https://developer.apple.com/documentation/bundleresources/information_property_list/nsadvertisingattributionreportendpoint

  2. We conducted the test through the SKADNetwork test framework according to specifications, but the postback was not sent to our server. In addition, we tried to check whether SKADNetwork was working properly through advertisements directly on publisher apps and advertiser apps, but postbacks were not sent to our servers. How can I check in this case? Also, there is error log below testing with SKAdTestSession

SKANTestabilitySample[14079:188474] [SKAdTestSession] Error fetching remote object proxy: Error Domain=NSCocoaErrorDomain Code=4097 "connection to service named com.apple.storekit.configuration.xpc" UserInfo={NSDebugDescription=connection to service named com.apple.storekit.configuration.xpc}
References:  https://developer.apple.com/documentation/storekittest/testing_and_validating_ad_impression_signatures_and_postbacks_for_skadnetwork
  1. Do I have to sign a contract with Apple to get a postback of SKAD Network Attribution Report?
Having a problem while Testing SKAdnetwork
 
 
Q