Problem With Signature Plugin

Happy weekend to you all. I need help and will appreciate if someone in this wonderful forum can come to my rescue. I have arsetalks.com. I am trying to use the wordpress signature plugin to put an ad at the end of the posts.

I have been running this ad from mgid.com for some time now and was making on average $40 per day but all of a sudden noticed the ad won’t show again. I have tried everything possible but it won’t show. The same problem I am having with goonersden.com.

Mgid believe the problem is from the plugin. Can someone help me please?