Grwibeou DVB-T and IPTV from Banggood, HELP..! type HD120_CID V202

DVB-T2 works well. Youtube also works but the search function doesn&work IPTV is not working. The .m3u files all work well with a VLC player. The .m3u files won&load from USB memory stick I follow the procedure as required. m3u files are visible but when loading the system hangs. The formatting of the .m3u files is as required. What is the cause? Software version? bug? Who is helping me? sw version v20032-2021/07/24 type HD120_CID V202