Sorry to hear about the problems you have encountered. While I am, like you, just a user I have some thoughts to share that may or may not help.
First, I have owned numerous CycleOps products and you can’t ask for a company the does more to support it’s customers. If you have an actual hardware problem I believe they will take care of you rapidly.
I have had issues with my Hammer trainer when the ANT+ sensors weren’t being detected correctly. I got an extension for my USB ANT+ dongle and put the sensor close to my trainer which helped a lot. I’ve found that I have a lot of radio traffic from my router and all of the other 2.4 and 2.5 GHz radio sources that can wreak havoc on the relatively low power ANT+ signals.
You can also use the Zwift Android App to pick up the Bluetooth signals instead of ANT+. The Zwift folks were really helpful in this regard. They looked at my ride logs (which I had to supply from a directory on my computer) which indicated that I was experiencing a lot of data drop outs locally via ANT+.
I once thought that my trainer had completely died, however, it turned out the power supply had become disconnected.
I had a mechanical problem with the freehub of the trainer. CycleOps provided me with instructions on how to alleviate it. There was way too much grease inside the freehub and the pawls became stuck such that they wouldn’t engage.
I’ve been regularly checking the operation of my Hammer using the Virtual Training software to; calibrate the zero point, calibrate the power sensor and to check for new firmware updates. Have you checked the trainer with this software?
And finally, I’ve just upgraded my internet service this weekend. I was having issues with my connection and was having all sorts of weird behavior between my trainer and Zwift. Try using a connection test program like the Internet Connection Speed Test available online for free. With much higher connection speeds a lot of the problems I was having have apparently been alleviated although it is early days yet. The lag in power especially on the escalator is still there, however, the avatar stopping on sharp changes in gradient appears to be much better whether using the Hammer Power meter or the Stages Crankarm meter which improvement I am current attributing to the better connection speed.
Here’s hoping that you will resolve you problem quickly and get out and “Hammer” on Zwift.