If you want, you can test it by your own, maybe it is in due of my configuration.... i dont know
1. The No Change as a first option what does it mean ? Obscure to the poster ...
2. One Day duration doesn't work, defaults to 365. Not important since 1 day ad doesn't really exist.
I will check more and come back.
(ps: do you mind if i -try to- mirror your Osclass part of your site ? in English ....)