Hi,

pls. provide the wp-admin access and add few screenshots with the issues.

Hi,

1. I deactivated check box "Page as fullscreen vertical slider keep on mobile" in your case it's not possible to have it because you have a lot of the content on the 1 slide. 

2. Don't use text in the image, image should be - image, text should be text (Text block) I'm about this image:

https://sing.cambridgehomeschool.com.my/wp/wp-content/uploads/2018/08/sally-F-1.jpg?id=31905

3. here is an example of CSS for controlling font size for mobile:

@media (max-width: 1000px) {
h1, .title-h1 {        
    line-height: 30px !important;        
    font-size: 30px !important;
}
h2, .title-h2 {        
    line-height: 30px !important;        
    font-size: 30px !important;
    }
}
@media (max-width: 768px) {
h1, .title-h1 {        
    line-height: 30px !important;        
    font-size: 30px !important;
}
h2, .title-h2 {        
    line-height: 30px !important;        
    font-size: 30px !important;
    }
}
@media (max-width: 500px) {
h1, .title-h1 {        
    line-height: 30px !important;        
    font-size: 30px !important;
}
h2, .title-h2 {        
    line-height: 30px !important;        
    font-size: 30px !important;
    }
}