Meta Voice SDK Wit.app no response

Hi,

I was following the tutorial to set up a pipeline to display voice as text using the wit.app. I got stuck when trying to send any message in the 'understanding viewer' step. Basically whatever I tried to type in and send, it gives a 'timeout' immediately. 

My setup is simple: I used v83 meta all-in-one sdk with unity 6.0 on a windows PC. a plain wit.app with only confirmation/negation built-in intents. Allowed unity through firewall. Tried the curl command and that worked. Tried to disable conduit, longer request timeout, different API versions, nothing changes.

tutorial link (got stuck in step 5): 

https://developers.meta.com/horizon/documentation/unity/unity-tutorial-basic-voice-input/