Hi Docdano ,
Thanks for reaching out to us! I hope that you had a great weekend. 😄
I took a look at your site and it looks like I can see a Buttonizer button on the site.
Were you perhaps able to fix the issue?
If the button is still not showing up on your end, it could be due to browser cache. Sometimes, the browser can cache your site and you won't be able to see any recent changes until the cache is cleared or visiting the site in an incognito window.
Please let me know if the button is showing up for you too. 😃