Michael Torbert

You don’t say what you mean by “website crashes” (WSOD, error message on the screen, error message in the error log with debug mode turned on, etc). However, if it happens when deleting the plugin, I’d say it’s unrelated to the plugin.
You can try these troubleshooting steps. https://semperplugins.com/documentation/how-to-troubleshoot-issues-with-all-in-one-seo-pack/

Let us know it happens with all other plugins deactivated and the default theme (Twenty Nineteen) activated, no customizations to your .htaccess or wp-config.php.

You can also use our API filter hook aiosp_opengraph_meta for more control if you’re able to write a bit of PHP.

You can also turn on error logging to see if anything is logged.

Closing this as there’s been no response in almost two months.

Since you haven’t shared the URL to your sitemap there isn’t much to go on.

Things to try:
-Set your posts per sitemap page to something lower than 5000, even as low as 500.
-Increase PHP memory, 512 minimum. (Do it in your config file and/or at the host level if you have access.)
-Increase PHP execution time.
-Check “Exclude Images”
-If you’re on shared hosting, switch to a faster hosting environment.

All in One SEO Pack doesn’t modify the H1.
Most likely it is another plugin or theme doing this. You can narrow it down with these troubleshooting steps. https://semperplugins.com/documentation/how-to-troubleshoot-issues-with-all-in-one-seo-pack/

I’m working with an SEO expert that would like to see the robots meta tag on all pages.

That would be against Google’s guidelines, which is why All in One SEO Pack intentionally doesn’t do it.
If you prefer to follow the advice of this person and go against Google’s recommendation, you can use our API filter hook to modify the behavior.
https://semperplugins.com/documentation/aioseop-robots-meta/

FYI – the tag already exists in the page if the settings are noindex or nofollow.

Correct. This is in accordance with Google’s guidelines.

Thank you for your kind words. 🙂