I had serious and sustained problems with Teknatool technical support for a period of about 6 months. I think their support department is just a handful of people in the US, and they don't seem to be well versed in their own technology. At the time I had my issues (Aug 2020-Feb 2021), the guy I eventually talked to on the phone a couple of times seemed to be wildly overworked and stressed out in a way I don't think I've ever seen before, and seemed to be way out of his element, repeatedly telling me he wasn't supposed to be in the position he was in, and didn't know how to fix my problems. It was very odd, the technical issues I had with my lathe took over 6 months to resolve ultimately requiring sending the whole thing back to them for repair. When I finally received it back, it was (still is) exhibiting a loud scraping and sometimes almost a grinding sound in the headstock. I never received any responses after that point.
I have written off Teknatool. Won't go near anything Nova or Teknatool again. I know some of their devices are good, people rave about their DVR, but Teknatool support is the worst I have ever experienced. Even with a DRV lathe or something, I would never want to interact with Teknatool support again. Infuriatingly frustrating, exceptionally disturbing, I concurrently feel angry about how they run their technical support department, and sad that their tech support people seem to be extremely frazzled and brain-fried and completely out of their element.