DEMO INSTALLATION

i Have recently purchased the
Highend – Ultimate Multi-Purpose WordPress Theme
Price: 49.00
Purchase Date: 08/24/14 11:21 PM
Purchase Code: 53fac74a-5db0-4788-a294-04ab0a141528

I m facing problem importing the demo content. it keeps showing an error
Due to large demo export files, on some hosts the full demo import will fail and generate Error 500 – Internal Server Error.
In that case, you can try increasing max_execution_time to 120 and WP_MEMORY_LIMIT to 128M.

can HB team help me out to resolve this??