Sync tool - opencart data feed

Hello,

i purchased following add-ons

But when i try to sync i always have errors.

i don't know what i'm doing wrong?

Could someone help me out?

Warning: SimpleXMLElement::__construct() [simplexmlelement.--construct]: Entity: line 1: parser error : Extra content at the end of the document in ~/admin123/sync_tool.app/import.inc.php on line 8
Warning: SimpleXMLElement::__construct() [simplexmlelement.--construct]: Notice: Use of undefined constant CHARSET - assumed 'CHARSET' in /home in ~/admin123/sync_tool.app/import.inc.php on line 8
Warning: SimpleXMLElement::__construct() [simplexmlelement.--construct]: ^ in ~/admin123/sync_tool.app/import.inc.php on line 8

Fatal error: Uncaught exception 'Exception' with message 'String could not be parsed as XML' in /home/dwhobbys/public_html/shop/admin123/sync_tool.app/import.inc.php:8 Stack trace: #0 /home/dwhobbys/public_html/shop/admin123/sync_tool.app/import.inc.php(8): SimpleXMLElement->__construct('Notice: ...') #1 /home/dwhobbys/public_html/shop/admin123/index.php(81): include('/home/dwhobbys/...') #2 {main} thrown in /home/dwhobbys/public_html/shop/admin123/sync_tool.app/import.inc.php on line 8
I recceived your e-mail. Recent clients had some issues with the feed. I contacted you regarding assisting you and a newer update.