You're right. My apologies, that last fix was a workaround, and modern SEO tools are smart enough to see through it.

The best-practice solution is to use the correct HTML element for the job. Since those items in the dropdown are clickable actions, not navigational links, they should be <button> elements.

This change will permanently fix the "Uncrawlable Link" error. I have also included the necessary CSS to make the new buttons look identical to the old links, so the appearance will not change.

## Complete Plugin Code (Version 1.8)

Here is the full, updated code. The changes are in the roi_custom_registration_shortcode function, where the <a> tags in the dropdown are now <button> tags, and a corresponding style has been added.
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