Each new major product version (e.g. Screen Recorder 22 -> Screen Recorder 23) is considered a separate program by Windows or Mac OS.
Therefore, you need to install the new version separately in order to start using it. You are free to remove the previous version from your PC/Mac.
The installation file can be downloaded directly from our website or you can use this service to retrieve it, as well as Activation keys for all your purchased products: https://www.movavi.com/support/lostkey.html
Once installed, proceed to activation, detailed instuctions for each product can be found here: https://www.movavi.com/support/activatekey/
If you own a subscription, you can use the same Activation key which was used for the previous version.