Hi,
after testing the free account (~900 kB/s) and buying a 5TB plan, I get now only 100 kB/s upload speed on my QNAP NAS. I tested the speed several times to several severs in California and get almost always full upload speed (900 kB/s). Upload speed to Amazon servers is constantly full speed. I already sent an error report and contacted the customer services -> no success. With this speed it's just ridiculous to upload ~5TB...