The garage is AutoSimba in Lisbon. The engine had starting issues during the last 1,5 years, worsing every time and not actually starting since October. The garage had just diagnosed the same in another M3W which is also currently stationed and also waiting for a supplier for those tappets. It seems both should have the same issue, the garage read 0 compression at both cylinders as I have been told so they believe that should be the problem, as the other M3W has a disassembled engine and only then they identified malfunctioning tappets.
My M3W is currrently at around 12500kms, bought it with 11500kms in 2021.