I purchased Parallels Desktop 16 in 2021， and upgrade into Parallels Desktop 17 in 2022 Because my last MAC has been broken recentily, I tried to install Parallels Desktop 17 on a new computer. I found the registration code purchased at the time in the mailbox. After entering it, I was reminded that this is an upgrade registration code, which requires me to fill in the old code. I found a series of old codes in the mailbox and the mail said Sometimes registration may require this old code). When I filled in two registration codes, I was still prompted: Unable to activate Parallels Desktop: the license server did not accept the product key of the earlier version of Parallels Desktop very urgent
