I bought the Archer A7 Router back in June and then bought the RE300 Extender. I cannot register either product. I have been through customer support and they didn't help. It is for the US version. I can enter the Serial number but then it says it cannot find the serial number. After i received the Extender, it worked for 1 day and then doesn't work at all anymore. Customer support helped me try to resolve the issue but the final conclusion was they told me that I needed a new one. So I can't get a new one because I can't register my products on their site. I have been emailing with their customer support for about 3 weeks now and have even sent them my proof of purchase, a video of what the extender was doing as well as pictures, and I have also sent them pictures of the serial numbers for both products. They did say the problem should be fixed but it wasn't and I still can't register my products. I also sent them a picture of how it says it cannot find the serial number. I was about done and finally decided to return the extender back to Amazon where I purchased it. I would love to be able to register my Archer A7 Router so if something happens to it in the next 2 years I can use the warranty. Resolving the issue would also be appreciated in a timely manner as well.