AppsFlyer SDK Integration Test successful on app, but non-organic test data is not reflected on the Dashboard

Question

I have performed an Integration test with the AppsFlyer's test app, ending with the "Hooray!" success message. However, no non-organic install is reflected in the Dashboard.

Moreover, nothing appears in the dropdown "Media Source" (It should appear AppsFlyer_Test)

AppsFlyer SDK version:4.8.15 AppsFlyer test SDK app version: 4.3.13 Device tested: Samsung Galaxy S6 with Android 7.0