Sorry for a delay.
We’ve checked your site and haven’t seen any problems.
Please make sure you’re using the latest slider version and check if the issue persists only with our theme, or with default one too.
If it’s present with default theme too, then we need your permission to provide your login credentials to Revolution Slider support team and show screenshots of the problem with our and default themes.
We need all this information because we don’t provide support for plugins even if they are included in the theme and we have to write to plugin support.
Thank you for understanding.