Refunding due to problems

How to get a refund on this unit if I can’t use it because I have something similar already.
Sorry

My understanding is that if Indiegogo has not yet paid cz.nic then you can ask Indiegogo to refund your investment. If they have already paid then it is up to cz.nic to decide if they will refund you or not because it is an investment and not a purchase.