My website URL is https://shoulee-3636.myshopify.com
the banner video background works fine on Apple devices but do not appear at all on android devices. Is there a way to fix that? thank you 
Hey @abassam .
Thanks for reaching out.
I appreciate that you have included your online store URL as that is super helpful! It would be best to have our live support to have a further look into the set up of the theme. Since I cannot authenticate you over the Community forums due to the sensitive information that needs to be shared, I am unable to look into the specifics.
In this case, you can get in touch with our live support by logging into your online store using the Contact Us page. This will allow us to securely verify you as the store owner.
Once you successfully login - you will be directed to the Help Center. Select the topic that you would like assistance with to locate the options to Get Support and speak directly with a Support Advisor.
While I was taking a look at your online store, I did notice that you do not currently have a favicon set for your website. A favicon is a small square image that represents a website in web browser tabs. Typically, favicons feature a logo, the first letter of the company name or simply an image that reflects the specifics of the website it represents. Adding a favicon to your online store can help strengthen your brand and add a polished look to your website. You can click on this link to read instructions on how to add your own favicon your store.
Keep in mind that these images are displayed quite small, so it’s good to keep in mind that the image you use should be readable at small sizes.
Let me know if you have any questions.