Unfortunately, that is no possible with the “Agama slider”.
If you want more than 10slides, instead of Agama Slider, you can use the “Layer Slider” which you already got with the theme.
If you decide to go with the Layer Slider, let me know if you need help with setup.
Also,by Visiting your website I found that you need to insert the following code in Customizing->General->Additional CSS, to prevent cropping your slider images.
I’ve had a go with the Layer Slider. I am having issues, all I want to do is the same style slide show as with the Agama slider, I have added buttons onto the Layer slider but for some reason they’re not showing in production.
If you give me your WP login credentials in the private reply (Check the “Set as private reply” button below the post) I will try to fix that for you directly on your website.
I think I’ve partly managed to set your Layer Slider to look similar to the Agama Slider you had
Now you can edit your slider to suit your needs.
I can not put a slider right now since you are currently editing your Homepage, so please add manually the Homepage slider_2, from Agama options meta-box.
I have made another slider for your homepage using the Revolution Slider Plugin.
Now it looks better for me.
If you want to edit the slider settings or add another slide, please follow the video guide I made for you: Revolution Slider setup