Same- did not work on safari, chrome, or edge on Mac. Drop down boxes won't drop down.It won't work for me. Must be some browser issues. Tried two browsers, neither worked. Can use the mechanics one just fine. And, it returned the DIN expected, which was sort of nice as the DIN I've been using was from 30 pounds ago and I used it 20 pounds higher, too. Apparently it'll be good all the way down to my goal weight.