i have tried uninstalling the program and redownloading it but it is still linked to a trial account i used a long time ago, its saying its sending me confirmation emails to that account when the program opens up but i no longer use or have access to that email. i am trying an account now with my university details and want to use this account to upgrade and purchase but im worried it will still be linked to the old account, thus locking me out of the program.
I fear it's a challenge for Adobe's Creative Cloud Cleaner Tool. Sometimes - for whatever reasons - CC doesn't "want" to work. In this case you should CC completely delete and reinstall by help of Adobe Creative Cloud Cleaner Tool. (A try to uninstall by own resources is not enough!)
I quote: ... helps resolve installation problems for Adobe Creative Cloud and Adobe Creative Suite (CS3-CS6) applications. The tool removes installation records for prerelease installations of Creative Cloud or Creative Suite applications. It does not affect existing installations of previous versions of Creative Cloud or Creative Suite applications.
Please use: http://helpx.adobe.com/creative-suite/kb/cs5-cleaner-tool-installation-problems.html and follow the prescribed sequence of operations
If necessary and for further questions and if "open" please use chat, I had the best experiences.