sound and picture not working

Initially, when I work on anki desktop the sound and the picture work, but when I use the ankidroid the sound and the picture don’t work. Then I did the sync and as a result ankiweb, anki desktop and ankidroid all didn’t work. Everyone help me because I wasted a lot of time and effort, huhu, please!!!

Have you seen Media files may take time to sync - Frequently Asked Questions ?

i tried and searched now how to turn on the sound of anki desktop? please help me. thank you

What exactly happens when reviewing a card with sound in AnkiDroid? Is there any warning dialog? What happens when you tap on the play button in the card? Do you have syncing of sounds and images enabled in the preferences? Did you try Check media? You searched Are files in the folder?