please check the tabs at the bottom of the Excel window: the converter puts the content on several worksheets, so the other pages may be on the other worksheets.
How it works today:
Online (https://tools.pdf24.org/en/pdf-to-excel): by default one worksheet per table, a table that runs over several pages becomes one worksheet. With the option "One sheet per page", each PDF page gets a worksheet of its own.
PDF24 Creator (Toolbox, "Convert from PDF"): since version 11.31.0 also one worksheet per table. The option to choose one worksheet per page will come with the next version.
If pages are still missing with the current version, so that we can reproduce this, please send us a file where it happens with this button: