You need to get the description of the missile attack range in synch with what the actual range is.  The first screen snapshot shows:

• The text description of the range of my missiles ("up to 3 tiles away")
• My fleet, which is 3 cells away from an enemy shipyard

The second screen snapshot shows that the game thinks that the shipyard is out of range, even though it is 3 cells away.  You can also see the line of the range circle cutting down through the shipyard.

However, if I move 1 cell down and to the left, as shown in the third screen snapshot, the shipyard is now in range, even though it is still 3 cells away.

I know this seems like a small thing but it is one of the many small annoying things in this game that are very fixable.  Yes, I still love playing the game because of all of the good things you have built into the game, but please invest some time (and money) into fixing all of the little things like this that I and others have posted about that would give the game a much more polished look.