Creative cloud says no apps are installed even though I already installed apps

I used to work with Lightroom and Photoshop on my McBook Pro. Then I bought a desktop PC and installed the softwares on the new PC since I am allowed to install them in two computers with my plan. I have been using Lightroom and Photoshop on my new desktop without problems for a while and then I realized that my creative cloud says "no apps installed", so I cannot get any updates for my softwares. But I can still open and use Lightroom and Photoshop. I looked up FAQ and found the suggestion saying that I should close the creative cloud, remove some records in the credential manager in the setting and then try to log in again. I have done that but still it didn´t help. Any idea to fix it?