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Thank you for your feedback.
 
1. Did your device and PC under the same wifi? Please use another network to see if it helps.
 
2. Did you use Cast code, QR code, or AirPlay?
 
3. Please reboot your phone and PC to see if it helps.
 
If you meet the lag problem, please go to the settings of AirDroid Cast, adjust fps, and quality to see if that helps.
 
We also have a new special package, would you like to have a try?
 
https://s3.amazonaws.com/dl.airdroid.com/20260417145257_AirDroid_Cast_Desktop_Client_Release_1.2.2.1_202604171435.dmg