I'm afraid I'm not familiar with that fertiliser. If the pot has good drainage, you can try washing out the fertiliser (assuming that's the problem). Water the pot until water comes out the bottom drainage holes and allow to drain completely. Do this a couple of times. If you can, put the pot somewhere where it will get sun and airflow around it to help it dry out after.
If the pot does not have good drainage, then the only other thing I can think of would be to try transplanting it into fresh soil, although this would cause the plant more trauma and damage to its root system.
