I don’t use a custom theme component for this, there is no paging of the results there:
But indeed, in the JSON output it states 35 results are shown, but in total there are 43 and it shows a page in the JSON output https://forum.tzm.community/g.json?filter=chapter&page=1. From your answer, I guess I cannot configure it that there should be 100 results shown per page? If not, then I have to make the retrieval of the JSON smarter. Not simply a wget, but maybe a Python script that continues to the next page when the total amount of entries have not been collected yet.