Sticky-ads for different type of ads?

Hi everyone,

First, I’d like to thank development team created this amazing plugin.
It saved my day several times.

However, I failed when I tried to add sticky-ad in post.

I used custom code type to add sticky-ads like the code below.
When sent the ads setting, this plugin automatic removed all my <amp-sticky-ad> tag.
Is it possible not to remove it?

<amp-sticky-ad layout="nodisplay">
  <amp-ad width="320"
    height="50"
    type="doubleclick"
    data-slot="/35096353/amptesting/formats/sticky">
  </amp-ad>
</amp-sticky-ad>

Many thanks for any helps.

The page I need help with: [log in to see the link]