My A/C is acting weird

[Ramsey019]

Half a year ago my condenser had a leak so I got it repaired and refilled with gas. After 3 months I noticed that the A/C exhaust on the left side is not blowing cold air (there is air coming out but not cold), but on the right side it just works perfectly. And after a couple of months both side aren't blowing cold air. I noticed that I had a gas leak again but how will I explain the left side not blowing cold air?

[Promise Land]

blockage inside the dash?