SETUP
I have two wordpress sites, both hosted with Hostinger, Astra Theme and Spectra blocks builder. They are using nearly all the same plugins. I am logged in as the site administrator to both.
ISSUE
On one site, on the plugins page, I have the “enable auto-updates” link on the right. On the other site I do not. I’ve compared both wp-config.php files and there is nothing that I can see that is disabling that option.
I tried following instructions and added “add\_filter( ‘auto\_update\_plugin’, ‘\_\_return\_true’ );” in the proper area, but that returns a Server 500 Error.
QUESTION
Where else should I look to figure out why enable auto-updates is not available.

I used to have auto-updates available, and then I noticed things slowing down. Depending on how many plugins you have, that can add a lot to the cron jobs, and too many cron jobs can slow a server down.
The other issue with auto updates is that occasionally an update will come out that breaks your site, the dev makes the announcement afterwards and you now have to either roll back the update or install a new update. I monitor one site whose theme breaks on WooCommerce updates if the theme dev hasn’t updated the theme.
Auto updates also don’t really let the user know exactly what got updated. I like to know what errors were fixed or what new features were added.
Instead, I have the Infinite WP plugin where I can update multiple sites at one time when I decide to do it. I usually run it on Wednesdays and Fridays. It can also be run with a cron job, but I prefer to do it manually.
I hope this is helpful.