Buttons Not Showing Up

I have used your plugin on other websites with the same theme and wordpress version and they are working fine. I have deactivated each of the plugins and that doesn’t seem to affect this. I have backed off from the buttons I want to provide, and just have a Call Now button with link: tel: 352-690-6933. The link is showing in bottom of the footer, but not displaying as a button on mobile device like the others. Can you help me figure out what the problem might be? Thank you.

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