Return of purchased product (Vive Cosmos)

[Bannschlag]

Hi,
I have been trying for days to contact the support (by form). Since I want to return the purchased product Vive Cosmos.
Unfortunately, the support has not responded. There is also no information on the website to find where and with what information I can return the product.
So here are the questions how and where to send the product.
What information must be included in the package?
Why is it so difficult to return products to HTC / Vive?

kr

[HackPerception]

@Bannschlag I've flagged your email address to a member of a care team within your region who can look into this and reach out to you. If you PM me the URL of the form you used, I can try try and verify that system from my side as well.

[laprid0]

I'm incredibly disappointed in the Cosmos after being a Vive fan for the past two years. I am hoping I can also return mine to the retailer I purchased from.