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Racz, sorry you are encountering problems using your new Creative Cloud Photograhy plan.  Has the Creative Cloud desktop app ever worked on this computer?  What steps did you take to try to allow the Creative Cloud desktop app to open?

Finally, please be aware that to use an individual plan the computer must have access to the servers and ports listed in https://helpx.adobe.com/enterprise/kb/network-endpoints.html. If the membership has never worked, then I would recommend you start by verifying the computer has the required access to the servers and ports listed in https://helpx.adobe.com/enterprise/kb/network-endpoints.html.