Want to change Dongle for not yet shippes order

Hello,

I am backer 1,964.
I order 3 Tracker + SW7 Dongle.
My order is not yet shipped.

Since I read that SW7 dongle gets hot and also sometimes has tracking issues, I would like to change my order / pledge:
SW7 dongle → Replacement with SW3 dongle.

Please let me know required next steps.