Hi,
We have responded to both issues.
A. Keyword not in first paragraph
The keyword not in first paragraph warning is often thrown out as there is an html element, code, image, or whitespace around the keyword which is affecting Yoast’s ability to scan for it. Alternatively, there may be another element that is actually in the first paragraph position. We ask that you please look around the keyword to see if there is something in the way. If there is try moving the elements around to see if it will resolve the warning. This guide explains more: https://kb.yoast.com/kb/warning-focus-keyword-not-in-first-paragraph/.
Additionally, if you believe your post has been written well for your target audience and moving elements around may result in a poor user experience, we would suggest ignoring the warning. Google will still be able to scan the source code and index the content. Indeed, you should never move elements around or change your focus keyword just to get a green dot. This guide explains more: https://yoast.com/want-green-bullet-wp-seo/.
However, this doesn’t mean that Google and other search engines won’t be able to see it, so if your first paragraph does contain your focus keyword, you can safely ignore this warning.
B. Apostrophe in alt-text
This is a bug. We suggest commenting on the issue here: https://github.com/Yoast/wordpress-seo/issues/6412 so you may be kept aware of updates. You may need an account in order to post.
In the meantime, we suggest ignoring it. So long as you know you added the alt-text correctly, Google will to as it will still be able to scan the source code of your page.
Plugin Support
Jerlyn
(@jerparx)
Closed due to inactivity.