You will want to use the Bullseye v11 OS version on the PI.
Run Type curl -sL https://raw.githubusercontent.com/rlwoodjr/Basic-SENDER/master/pi-install.sh | bash - into the Terminal Window and press enter.
curl -sL https://raw.githubusercontent.com/rlwoodjr/Basic-SENDER/master/pi-install.sh | bash -
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