I'm replacing an old shower. I removed the old drain (cast) with a new coupling and pvc to the old P trap. To aline the new drain with the pad and the P trap I used two 90 degree connections, I did not move the P trap for alinement. The drain will not drain, I have snaked for any issues and it seams to be clear. What am I missing? Should I dig out the concrete pad again and aline the P trap a cleaner flow or do I have other issues.

Thanks brian