skimmer line is clogged

we have 2 lines going to the filter. One is at the bottom of the deep end , the other is the skimmer up top. I have checked both lines at the filter. The line going to the bottom is fine, but the one to the skimmer is clogged. I ran a snake from the filter back and never hit anything, but it may not be long enough, it's 25 ft long. When I try to run it from the skimmer end I only get a few feet and get blocked. I'm not sure if this is because there are a couple of 90s and the snake won't pass, or if there is a bad clog. We have tried blowing out the line with no result. It is def the skimmer line that is blocked.
Does anyone have any suggestions?? Thx

As a rule, drain snakes won't pass pressure 90's, only DWV 90's.

You can try -- as a last resort -- one of the inflatable rubber line jets, that you connect to your water hose. But, if the line is cracked or not properly glued, you can destroy what remains of your skimmer line.

Good luck!