Some of the Stratux vendors are extremely generous with their return policies, knowing that budget parts sometimes arrive DOA. I've been lucky so far personally, but I've seen where vendors who monitor the Stratux forums on Slack and Reddit will jump in unannounced and ship a new part to someone who posted an issue such as yours. They're pilots just like us and I'm happy to do business with them. Hopefully your replacement part will be up to snuff.
Here's two Stratux sites you might find helpful:
https://www.reddit.com/r/stratux/new/
https://stratuxadsb.slack.com/