Navigation doesn’t work when I update WP or plugin

Hi there, I’m currently running older versions of WordPress and Multipage on my review site https://www.cameralabs.com/ , because updating either of them breaks my current format, forcing me to restore a backup. I’m currently using WP 5.4.7 and Multipage 1.3.7 and using shortcodes to create multipage posts with [nextpage title=”page-title”]

Here is a typical review with four pages: https://www.cameralabs.com/nikon-z-mc-50mm-f2-8-review/

Note the multi-page navigation below the title and author. I’m using a chevron style graphic for the pages.

When I update WordPress to 5.8.1, the navigation graphics still appear BUT clicking them just reloads the first page in the post. Hovering over the navigation graphics shows the correct URL with /2 or /3 or /4 after the main address, but even entering these manually just reloads the first page again.

If I update the Multipage plugin to 1.5.12, the navigation disappears altogether. If I change the plugin settings to show a different format, I can display a table of contents, but again when I click any other page in the post, it just reloads the first page.

Following the updates, I tried creating a new post using the block editor to create subpages and these work fine, so I’m guessing the problem lies with using shortcode for [nextpage title=”page-title”]. But this worked fine on my older installation which I have now restored using a backup.

I have tens or even hundreds of posts which have multipage reviews formatted this way, some are block-designed, some are old code from WP 4, but all work fine on WP 5.4.7 and Multipage 1.3.7.

What do you suggest?

Many thanks,

Gordon Laing, Editor, Cameralabs

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