500 Error: Timeout

I’ve been using this plugin for quite some time now with no problems (and I love it!). However, last night, I tried to rename some photos, and I kept getting a 500 Internal Server Error indicating a Request Timeout on https://blog.dianaschnuth.com/wp-admin/upload.php?&mfrh_rename=36367 (or various other IDs).

I tried updating to the most recent version of the plugin, and the most recent version of WordPress, and neither worked. I’ve been in contact with my webhost’s tech support, and they have been friendly but technically unhelpful.

I suspect there’s nothing amiss with the plugin, but can you tell me what settings and timeouts I should be telling them to check? They claim they have already “increased the PHP values.”

Here’s the detailed breakdown I gave my webhost:

Here’s an example of what’s happening. Within the WordPress UI, I’m editing metadata for a photo. I click to edit (https://blog.dianaschnuth.com/wp-admin/post.php?post=36375&action=edit). I get to the Edit Media page, and I change the title of the photo. When I hit the Update button, what should happen is, first, the Media Renamer plugin renames my photo in the filesystem and updates all links in WordPress, then it hands off to WordPress so it can update the metadata itself, then I should be returned to the Media Library and see my changes. What actually happens is that the connection times out and I get a 500 error. If I hit the Back button and then Refresh my browser window, the Media Library shows that the Media Renamer plugin has done its job of renaming the file itself, but (I see from the broken images on my site) it did not update the WordPress database with the updated filename, and it also did not hand off to WordPress to update the metadata, as the title of the media is unchanged. See the attached screenshot, in which I tried to change the shorter media name to the longer name, but only the file rename actually happened, not the metadata.