When I'm activating my Mavic Air via DJI GO 4 message shows me with this words: 'the device being connected to is not the one being activated'

Hi, there, Thank you for bringing this query to us. We do apologize for the trouble that this has caused. Can you please try to use a different network and try to activate it again? Also, can you please try to use a different recommended mobile device to see if there would be some changes. If all the troubleshooting steps won't work, kindly please send us a screenshot to this error for us to further help you. Thank you for your kind and understanding. Cheers!