If you bought a "Perpetual license" for a specific map edition, that does NOT mean are entitled to map updates. For example, if you bought "OS 1:25k Explorer - GB - 2022 Perpetual", your license is just for the 2022 edition map and you don't have access to the 2023 edition.
The Perpetual license means that when you install the map that you purchased, the license to use the map does not expire.
If you want updates, we recommend the 1 Year Subscription license. This gives you access to all new editions published during your subscription, but your license to use the map expires at the end of the Subscription period.