Boxster AC and heat don’t work but air still blows out

[Caeg]

I have a 97 Boxster and the AC and heat don’t really work. Air blows out but when I try to change the temperature of the air, it is barely affected to the point it’s unnoticeable unless I put my hand to the vent. Even then, there’s only a slight difference between the lowest and highest temperature. I put new coolant but that didn’t change anything for the AC. Checked the fuses and they were good. I do have foam in the vents but from what I read, that only affects heat and not AC. I couldn’t find anything on both AC and heat not working so sorry if this was already posted.