If you are using a perpetual license with no expiration date, you will want to use the numbered version corresponding with your license i.e. V12 or V13
If you have a subscription license whether it is monthly or yearly e.g. PDF Editor or PDF Editor Suite Subscriptions, you will want to use the corresponding yearly install package i.e. V2023
If you have any questions, please reach out to Foxit Support by submitting a support ticket or calling into our support number