Plugin do not respond on the settings

Dear Sir/Madam,

First of all thank you for such a good plugin.

But that seems that there is a problem, which I am not able to fix. I even don’t understand what is the problem, but plugin does not respond on settings I give it.

I want to have a lightbox with button for thumbnails, but plugin just doesn’t do anything, it like doesn’t hear me and does nothing. Other buttons such as “Fullscreen”and “Close” work, and I also able to change the background of the lightbox and that is all.

I just want to have thumbnails button.

Can you please take a look at this.
Hope to hear from you soon,
Thank you,
Sofia

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