I paid but I can't use it.

[wngml2256]

I'm a test version, though obviously the money got out under the name of 'KCP'. It is embarrassing to say that it is a trial version to use as a paid version. I don't know why.

[John T Smith · Accepted solution]

Revert to trial https://helpx.adobe.com/manage-account-membership/cc-reverts-to-trial.html may help
-and troubleshooting FAQ https://community.adobe.com/t5/Get-Started/Troubleshooting-FAQ-What-should-I-do-if-I-have-a-membersh...
-and https://helpx.adobe.com/creative-cloud/kb/cloud-website-shows-trial-purchase.html

[Nancy OShea]

After installing Creative Cloud Desktop App, did you log-out and log-in with your paid ID and password? 

[mauriceg87311438]

I'm not able to edit PDF

[kglad]

do you want help @mauriceg87311438 

[Nancy OShea]

@mauriceg87311438,

The free version of Acrobat Reader can't edit or save PDF files.

Do you have an active paid plan to Acrobat Pro or Acrobat Standard? 

Log-in below to confirm:

https://account.adobe.com/plans

FREE Acrobat Reader -- view, comment, print & sign PDF.
https://acrobat.adobe.com/acrobat/pdf-reader.html

Paid Acrobat Pro DC -- the complete solution for creating and saving PDF.
https://acrobat.adobe.com/acrobat/acrobat-pro.html

Hope that helps.