Did you receive any confirmation that they have received your sight? I want to send mine back, but am hesitant for the potential lack of receipt verification and the long timeframe (a year or more). While a UPS signature proves they received a box, this does not prove they received the sight. Probably nothing to worry about, but still a concern when talking about a $500+ sight that in my case may be just fine.
I rarely use my AR with EOTech and will probably never be subjecting it to the extremes cited that cause issues. So I may end up skipping the chance at a refund. I am on the fence and quickly running out of time to make a decision.