[Plugin: BlogGlue Related Posts Network Plugin] metadata info in posts

I have installed the last version of this plugin and i have seen, in some posts, some infos about metadatas are showed, such as:

• arkayne-time-post: 1309288718

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is it normal? or is there a way to hide this? Thanks

https://www.ads-software.com/extend/plugins/arkayne-site-to-site-related-content/