Since updating to firmware version 4.7.0 on the GL-AX1800 router, I’ve noticed an issue with the DLNA feature: folders and files containing the "-" (dash) character no longer appear.
After several tests, it seems this behavior is specific to this firmware version. I haven’t seen any mention of this issue on the forum, so I wanted to report it here.
Seems I did not reproduce this issue.
Please share some screenshots about the GL GUI Network Storage, Smart TV DLNA page, to check the folder name and file name.