Hello,
Unfortunately, you seem to be another user affected by the one faulty batch of Zubax GNSS 2. I mentioned this problem here before: Second GNSS Zubax gone dead after some time - #3 by pavel-kirienko
I suppose you have ordered your units from Titan Elite; may I ask you please to send them an email or call them and ask for either replacement or a refund?
We apologize for the inconvenience. We take quality and reliability extremely seriously, and necessary precautions have already been taken to prevent similar latent failures in the future. If you still have questions or issues contacting Titan Elite, please PM me.