Scanning for receivers is a pretty straight-forward process and it should find them if they are the correct model and setup correctly.  Please follow all of the steps <a href="/faq/index.php?action=artikel&cat=3&id=25&artlang=en" target="_blank">found herea> in order to confirm that your DirecTV receiver or DVR is configured correctly.

If your Android device's IP address and the receiver's IP address both appear similar as outlined in the linked instructions above, <a href="/faq/index.php?action=artikel&cat=3&id=4&artlang=en" target="_blank">click herea> for more help with resolving this issue.