Blower not moving any air
Many things can cause the A/C not to work right. Sometimes it's in the actual mechanical part of the A/C. And sometimes it's only in the "air movement" part of the system. If you are not getting any air blowing out the vents but the vents feel cold, AND you can hear the blower fan running, then it might simply be a restricted cabin air filter. Many Many people don't even know their cars have cabin air filters. And as these cars get older, the filters get more and more restricted. Even if yours isn't as restricted as this one, you should change them frequently.