Hello roger,
Is that link is added from the content section or any other places ? If that code is arising from the codes, you have to find the codes inside acmthemes/hooks folder. Find the code there to customize the code.

Thank You

Would you please contact us with email. We will solve it with dedicated solutions.

Sure, please try it. If not worked, let us know.

Thank You

Please add the CSS codes on Appearance > Customize > Layout Options > custom Css

.slider-section .bx-controls-direction a {
    background: #000;
}

.slider-section .bx-controls-direction a i.fa.fa-angle-left {
    color: #fff;
}

.slider-section .bx-controls-direction a i.fa.fa-angle-right {
    color: #fff;
}

Thank You

Yes, it is due to the plugin issues. Is all the plugin uninstalled on your site? If so, we will check it and response you. Our theme is full responsive(you already checked) our demo. So, make sure all thing fine from your site as mentioned above too. After than we will check it all.
Thank You

You added the UL LI from html or from content options? You need a different color any specified? If so let us know. We will provide you css codes.

Hello danielkoepf,
Thanks for your query. You mean to say, while added list content the bullet color will appear like that? Would you please provide us the link of your site where you added the bullet ? After that, we can know the real problem and solve it accordingly.

Thank You