Copy/paste/blend summary from comments:
Overall, the ship was barely in fighting condition 14 days before the war and with its defensive systems in worse conditions. Layman's summary: the things that were supposed to work don't, and when they do they make other things not work. The Moskva was essentially a cripple, and that was their Black Sea flagship.
Another thing that was notable was interference between the MR-800 Flag primary air search radar and the SATCOM systems. Turning the radar to active scan mode (Ch. 3) would make the SATCOM system unstable and unusable.
These ships have a multi layer defence system of long and short range missiles with AK-630 Close-In Weapons System as a self defence last resort. Moskva sailing with no radar means no missiles can be used and her last (only) line of defence, the AK-630s were BROKEN, leaking hydraulic fluid, electronic sensors broken. Sailing blind and defenceless"