Micro you are allowed to continue provided the rvr is greater than 75, beyond that point you can continue to the DH aand NoDH is valid. Provided the aircraft does not downgrade the landing category all is valid.
In Canada, for example, the requirement is to discontinue the approach if the rvr goes below minima even after the ABP, not so in EASA land.
The airport has to be equipped to Cat IIIB standard for No DH, as far as I am aware there are none in Canada and a very few in the US (Seattle being one of course, reqd for Boeing testing and certification I believe but stand to be corrected.)
There is no interpretation required, those are the rules as certified if you operate under EASA.
