HMC4069 Evaluation board switch control

I bought a HMC4069 evaluation board last month. It has 5 bit control pins which decide the frequency division ratio. 

With A0-A4 1/0/0/0/0, it has to work with 1/2 ratio but failed. It doesn't work with 0/1/0/0/0, either. It works with A0-A4 1/1/1/0/0, though It shows 1/4 division ratio instead of 1/8 ratio.

It works well with A0-A4, 1/1/1/1/0 and A0-A4 1/1/1/1/1. Though the division ratios are 1/12 and 1/28, respectively. They are different from the ratio referenced in the datasheet.

I expect that the HMC4069 evaluation board has a failure. Could you tell me how to solve this problem?

Thanks,

Tommy.