Slider and Banner Section ShopIsle

Hello!

I am using ShopIsle Theme (Free Version). I started trying this theme for a spanish online store before upgrade to Pro version. But I have some problems with the free versión. I customized the slider and banner section one month ago, but now I can’t modify them (my frontpage is check on showing post). There is not any upgrade message but I can modify the other sections like video, product slider. I want to know if it is because of Free Version, or a problem with navigator or other. I tried with Chrome, Safari and Firefox, but still blocked. Thanks!