Remove related products has stopped working

Hello.

we have been using this plugin for a while now, but lately it has stopped working. It is important for us to remove the related products part as it might be showing products that has nothing to do with the product they are watching. for example it might be showing them lids that does not fit the products they are after. some help would be greatly appreciated as we need to remove the related products part as fast as possible.

The page I need help with: [log in to see the link]