Did they change pads recently with QF? I found that when I followed the instructions, heated up the bottle with the liquid in the microwave to above the top temp marker on the bottle, (about 20 seconds iirc), and then put the activated pad on there, tucked it between the legs and went to the testing site that it was perfect temp by the time I got in to pee.

Took a few tries worth of practice. Thankfully the QF can be reheated if need be, so I ran quite a few practice runs to make sure temp wouldnt be a problem.