Clear Blue stick replacements!

Hello! I am so confused and I have a few questions. I first bought the clear blue ovulation test (which gives you two days of peak fertility) last month. I did not get pregnant, and this month discovered clear blue advanced digital ovulation which gives you both high and peak fertility. I now have two questions:

(1) Can I used the sticks from the standard ovulation set with the ADVANCED set and still get advanced level results

(2) Where the hell do you buy replacement sticks only? I dont want to buy a new kit every 1-2 months!

I am so confused and this is a bit frustrating!