install older version

Please Explain in more detail what you are asking.

Give all your system specs and what exactly did you purchase and from where.

With the limited information that you have given in your first post it will be nearly impossible to help you in any way.

Thanks and have a Merry.

you can install the latest and 1 version prior versions using the cc desktop app. you must have a subscription because previous versions are not available with trials.

other versions are revealed in the apps tab by clicking the 3 dots adjacent to the open/install button after clicking preferences>cc>tick show older apps.