I hope you are well today and thank you for your question.
You can change it using Yellow Pencil plugin as described in the following page.
It seems your shared site is not accessible for others so if above solution doesn’t work for you then would you mind if i log in to your site and access it? If this is ok then could you please share me your site log in details privately by adding them in the box having text “Click here to share private content. Only you and forum moderators will bee able see it.”?