wooden_flower Volunteer Community Mentor.
You must request a return within 30 days of receipt, so it is much too late for eBay to help. As you can see, it is also too late to contact the seller, although you could try sending him a message through one of his active items, if he has one.
Most credit card can help for 90 - 180 days, so it may be too late for them to help.
Have you tried contacting the manufacturer for assistance?
