Wow. We had this app installed for 3 minutes before we realized it was automatically live on the website, prior to getting ANY of our Swatches updated, it was showing up on our product pages with only about 1/5th of what was needed. Considering we just launched a new line of products today, and our website had a high amount of traffic for us, who were now on a website that did not give them the proper selection of variants.
Had they had a simple "test mode" none of this would have been an issue...and if they do, in my frantic struggle through the admin panel, settings, swatches etc did not turn this up, so there is a user experience failure there as I was unable to find a very basic button.
Overall, this short frustrating experience has convinced me to avoid Webyze at all cost.