Is the HG helper turned on in HA-Bridge with correct info?
can you turn on devices from inside HA-Bridge?
Have you re-added your devices after the Upgrade? You shouldn't have had to but doing so and getting one out of order would mess things up.
Did you remove your devices from Alexa prior to discovery? If so this need to be done one at a time, a mass forget usually fails. This can be seen if you stop HA-Bridge and ask Alexa to discover, devices will reappear but Alexa says no devices found.