Tvheadend

I can't understand what the problem is - I installed version 4.3 on raspberry 4, configured it for IPTV (using external links), I saw everything, I put tags, but in the final M3U (http // my-ip: 9981 / playlist) there are no groups (categories ) channels, although the tags are set. By clicking the Tags link, I get only categories but without the list of channels ... How to make sure that the final playlist displays the categories and the list of channels in them so that you can drop the link into a regular IPTV player?