Highend Theme Options Issue

I am attempting to make changes to the Highend Theme Options and have made the changes to wp-config as indicated in other posts, but for some reason that change is not resolving the issue. I entered the following lines at the top of that file:

<?php

set_time_limit(120);
define(‘WP_MEMORY_LIMIT’, ‘128M’);

I gather from a couple of other posts and some documentation that this should fix the issue. However, I’m wondering oif there are settings I need to set elsehwre as well because the System Diagnostics section still contains messages indicating the settings are not as they should be:

WP Memory Limit:
40 MB
Recommended memory limit should be at least 64MB. Please, take a look at: Increasing memory allocated to PHP for more information.
WP Max Upload Size:
8 MB
Max Execution Time:
90
Recommended max_execution_time should be at least 120. Please, take a look at: Increasing max_execution_time instructions for more information.

Any help much appreciated. Thanks All!