I had the same thing with Wrench Science's bike fit calculator. Their web site in general is an enigma to me. I try to save something and it is maybe not saved, the fit calculations are very different from every single bike I currently ride, etc. All my current road bikes are 61 cm top tube with a 110 cm stem and they recommended a 56 cm top tube. Let me think... no way I fit on a 56 cm top tube bike.

Their web site support guy was very prompt in answering my questions, but was also very defensive: their web site is not a buggy pile of steaming poo. Their products look very good, and I am considering a fairly high end build from them, but it will not be using their fit.

Also, I can't delete individual components from a build. I want to use some stuff on my "rack o' junk" for my next build but their online configuration doesn't support that. But if I chat with them they can do it and send me the price. So not a good web site. A very fancy web site, but not very good. But what do I know. The only web sites I have written have been control panels on industrial automation systems.