How do I Actually Download the Unreal Engine SDK?
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This must have been broken recently, as I know that the list there has still been shown correctly a couple of days ago.
I have reported this internally and it will hopefully get fixed soon.
In the meantime you can just use the list at https://doc.photonengine.com/en-us/realtime/current/getting-started/unreal-engine.
Or simply use this link that will show all C++ Client SDKs in the download section:0