Welcome to the forum.
Once installed, I am not sure that there is a way to change the language.
Normally, one has two language choices: the first is for the installation routine, and then the second is for the language that will be installed with the program. That is where one would choose which language the program will run with.
It might well be that a Deactivate, uninstall, Adobe Cleaner Tool, then re-install and Activate, will be required to get English as the language of the program.