@Saber12345 

Hi,

If you see the message "You've reached your device limit for playing this video", reboot your camera and ensure device usage stays within these limits:

    1. For SD Card playback (remote or local), only one account/device can access clips at a time in the Tapo App.

    2. For local viewing, up to three devices can stream the live feed simultaneously. Connections via ONVIF or RTSP also count toward this limit.

    3. Remote viewing generally has no account/device limit.

Meanwhile, may I know the model number, OS version of your phone, and the Tapo APP version? 

If the problem persists, we recommend sending an email to forumsupport.usa@tp-link.com with the following information:
Subject: [Forum Escalation][871544 ] Tapo camera device limt for playback
Forum Nickname: [User Provided]
Thread URL: https://community.tp-link.com/us/smart-home/forum/topic/871544
Model&Version: 
Description: [User Provided]
Screen recording of the issue reproduction process: [User Provided]

Once sent, a ticket will be created in our support system, and a team member will follow up to gather more information or troubleshoot the issue.