Synapse 3 Install Error: Server Unreachable

Hi all, I bought 2 Razer Products today, and i also want to use the nice RBG effects - downloaded the installer and tried to install failed - did some stuff (Changing Firewall Settings and so on) I also contacted support - they told me to contact Windows Support. (Sorry nice try but this is not how software works) After some fiddling around, i found the reason in the installation log - the razer server is returning an error while trying to download the manifest (found in the Stack Trace) 2019-03-09 20:29:09,844 [7] ERROR RazerInstaller [(null)] - Error downloading file (https://manifest.razerapi.com/api/legacy/igB7y0WY/prod/productlist/get): Der Remoteserver hat einen Fehler zurückgegeben: (500) Interner Serverfehler. System.Net.WebException: Der Remoteserver hat einen Fehler zurückgegeben: (500) Interner Serverfehler. bei System.Net.HttpWebRequest.GetResponse() bei Razer.RazerInstallerCommon.ServerManifestDownloader.DownloadFile(String url, String destination, String fileName, String& errorMessage, Exception& exception, Boolean overwrite, UInt32 retries) 2019-03-09 20:29:09,849 [7] DEBUG RazerInstaller [(null)] - Failed to download Software Manifest -- Yeah i know the error msg itself is in German but it means: Remote server retuned with error: (500) Internal Server error. Are there any (known) fixes for this? Because contacting the razer support via chat is pretty pointless. If needed i can also attach the whole error log with the full stack trace... BR Insa