Welcome to Adobe Forum,
You have photography CC, please uninstall it by checking the preference box too. (You might have a trial LR with incomplete uninstall)
Now try to download it from CCdektop APP.
Let us the if it worked.
This is an OPEN FORUM, not Adobe support... I have sent a message to the forum Moderator asking that your serial number be removed from your message title
You should NEVER post private information !!!