Hey, thanks for the detailed answers, very much appreciated, although we still have some extra questions, if you don't mind.
Which theme of your related posts did you use before deactivating it? Maybe the Pinterest inspired one? If so, would you please be so kind and activate it again and change it to some other one?
If not, would it be possible for you to activate our plugin again so we could quickly check one of you blog posts to see what errors do we get?
Since we cannot replicate this problem on our side, we would really appreciate your cooperation on this matter. Although we can understand if you choose not to.
In any case — we're looking forward to your reply!