Looks related to changes introduced in https://github.com/aerogear/aerogear-android-sdk/pull/244.

NOTE: App launch metrics are sent, but there's a separate, related bug there, see AEROGEAR-3079.

From debugging, it seems the executor isn't executing the request when it's queued up in publish()
https://github.com/aerogear/aerogear-android-sdk/blob/4215aa854b71d29dd31cf6827119169fef1ec40a/core/src/main/java/org/aerogear/mobile/core/metrics/MetricsService.java#L52