First you bought the 2022 Program ... the 2023 program will not be out until next November.
Then you can install the program on any computer that you own ... that is what the fine print says. However if you want to install it on his and your computer you MUST ONLY use the downloaded instructions. Do NOT use the CD option at all or you will be sorry. Read the download instructions carefully ... you must both use the same log in information to the same account.
