admin/modules/tools/pmlog.php

[xykul]

if(!$per_page)
{
$per_page = 20;
}

not working
20 not
10 lines displayed.

[Sama34]

It should work as expected.
https://github.com/PaulBender/Private-Message-Log/blob/master/admin/modules/tools/pmlog.php#L166-L171

[xykul]

Have you tested? I do not have 20 lines.

There is another error.
Read the popups PM
Click to read more on the same page PM
Incorrect orientation ... It opens at the bottom of the index page. Each new clicks the bottom of the PM opens a new index page.

[Starpaul20]

I can't reproduce any issue with this. The plugin uses the threads per page setting to determine the number of pms per page. It'll only set it to 20 if the threads per page setting is missing or set to zero.