Purchased a multi-seat renewal license for NOD32 2.7.39. Entered the new Username and Password into the Update page. Initial update worked as expected. Next day booted PC and noticed that NOD32 did not perform it's usual update at boot. Checked the Update section and noticed the username field was empty(?). Re-entered Username and updated worked. Rebooted the PC to check if Username/Password was "Sticky". Seemed to retain the username. Since I updated several PCs I'm concerned that the Username and Password is not being retained properly on entering renewal information. Known issue or just one of those quirky things that happens with software ?