insecure url in layer slide stylesheet cs

Hi there,
Im trying to fix insecure content in a layerslide style sheet here:

Mixed Content: The page at ‘https://www.snowdonia-adventures.co.uk/summer/scramble/’ was loaded over HTTPS, but requested an insecure stylesheet ‘http://www.snowdonia-adventures.co.uk/wp-content/plugins/LayerSlider/static/layerslider/skins/v5/skin.css’. This request has been blocked; the content must be served over HTTPS.

(index):1 Mixed Content: The page at ‘https://www.snowdonia-adventures.co.uk/summer/scramble/’ was loaded over HTTPS, but requested an insecure image ‘http://www.snowdonia-adventures.co.uk/wp-content/plugins/LayerSlider/static/layerslider/skins/v5/nothumb.png’. This content should also be served over HTTPS.

where do I find the style sheet so I can change the url please, if that is how it is fixed?

Hi

The best way to get the support is Contact your purchased Slider Plugin Author and let them know. Plugin Author will help you to get a solution.

Thanks