Error Message - Adobe Creative Cloud not found

Hello,
since Friday my computer has been showing an error message regarding Creative Cloud. The message is something like "Adobe Creative Cloud is needed to resolve this issue, but it has not been found or is corrupted. Download and install Creative Cloud again" (it's in Portuguese, actually).

Coincidentally or not, my computer has been very slow ever since, including when browsing internet.
I tried to uninstall the application but it failed. I also downloaded Creative Cloud again, but the problem still persists.

Can someone help me?