Old machine: activate from the command line

Make sure to replace the appropriate values: <REPLACE_client> to your client atSign <client_device_name> with the device name from step 2

Step 1) Generate an OTP (one time pin code)

~/.local/bin/at_activate otp -a @<REPLACE_client>

Step 3) Approve the request

~/.local/bin/at_activate approve -a @<REPLACE_client> \
  --arx noports \
  --drx <client_device_name>