Aoostar are considered absolute scammers. Bought a NAS from them and returned for a refund. The order was not opened. Full tracking information provided to Aoostar confirming they received the order back and, several months later, no refund issued. Very broken communication from them including claiming the agent originally replying (as and when they chose to do so) left the company. Despite this they've cut off all communication. Please save yourselves the hassle buying products from Aoostar. Honestly believed to be an absolutely disgusting company to deal with.