Cookedup Candles

Hello all, I am new to this but really need some advice when it comes to making soy candles. I have been making candles for almost a year now and have had great success at finally making a product that I feel confident with. Recently I filled an order for a client and something went terribly wrong. The candles were smoking heavily, the flame was flashing and out of control, and the glass jar on some broke. I have done some trouble shooting and tried adding the fragrance oil at a hotter wax temp, I’ve tried reducing the amount of oil I’m using but I keep getting the same result with this crazy flame. I am so confused as to how Ive been making candles for quite some time and never ran into this issue but now there is this weird problem. Has anyone else experienced this?? I feel so confused and would love some advice. Thanks!!