That is correct, 2400 mts required. Reported in Metal was 2000 -RA, tempo 1500 TSRA.
Before starting the VOR 28 approach, possibly ATC advised above 2400 mts vis and due to favorable winds the pilots maybe decided to shoot the VOR 28 .Thereafter vis reduced again and they must have discontinued to try the ILS 10 . Also possible ATC advised them about the ATR which landed 10 after the 28 approach..
We will know more once the DFDR is decoded. Till then it’s all speculation.