Troubles with the theme - by alrodriguez

Hi, I have two troubles with the theme:

1. The filter prices that appear in the categories only taken the regular price, I installed the plugin “Price by user role”, with this plugin I can increase a percentage according to the user role, but the filter price doesn’t take the price with the percentage increase.

2. When I try to modify the chat console, appear me the follow message:
Connection error! Please try again…
Warning: Cannot modify header information – headers already sent by (output started at /home/solopromos1/webapps/spromos/wp-content/plugins/screets-chat/core/fn.init.php:453) in /home/solopromos1/webapps/spromos/wp-includes/pluggable.php on line 1228

Thanks for your soon help.