Mounting Muino smart water meter reader

I bought a Muino smart water meter reader from Martijn van Wezel, but have difficulties mounting it on my water meter. The reader is a.o. compatible with a Sensus 620 water meter. Because my meter has “Sensus” on the “dial plate” I thought it was a 620 but apparently I was mistaken. I add a picture of my meter. I also add a picture from the Muino website indicating how the reader should be mounted on a Sensus 620. The muino comes with 2 short screws. The Muino does not fit smoothly at the surface of my watermeter. I have following questions:

  • Are the 2 studs (A and B) on my meter indeed the studs it be used.
  • The 2 designated mounting “holes” are blind holes. Should I drill them open.
  • Should the studs A and B fall into the mounting holes of the reader.
  • Should the white rim with cap be removed off my meter? I already tried to remove it but without success, also because of fear to break it when applying too much force.

I’m pretty sure, you have better luck contacting the seller for your questions.

Good advise, but I tried that already (and, so far, he didn’t respond).