404 error when trynig to create a New Package in the Custom Installer

I'm trying to make an updated installer that contains our key and everything but am getting an error.

I went to the Installer File Generator and that worked fine.
I then went to the Custom Installer Manager which opens and shows me an older version I created.

However, as soon as I click on New Package, it gives me an error.

The "Details" area shows:

Url: https://cloud.devolutions.net/api/custominstaller/getcustominstallertemplates

WebException - The remote server returned an error: (404) Not Found.

at System.Net.HttpWebRequest.GetResponse()
at Devolutions.Cloud.ApiWrapper.RestClient.c54e34fff4ff58e07690970afe18bed09[cb75a0a5d15a1ad8b8a8a5e57cca214a3](HttpWebRequest c4da66d4e934a12695b4a89ff6089eaa6)
at Devolutions.Cloud.ApiWrapper.RestClient.GetInfoMultipleDataRequest[T](String apiUrl)
at Devolutions.Cloud.ApiWrapper.CloudWebClient.GetCustomInstallerTemplates()
at Devolutions.RemoteDesktopManager.RDMOProxy.RDMOWebApiClient.cad8ca1c1f67056b1cc2eb8577a7d4447()
at Devolutions.RemoteDesktopManager.RDMOProxy.RDMOWebApiClient.c4cfebae48c715cba5241d6a671d47c8d[cb75a0a5d15a1ad8b8a8a5e57cca214a3](c46589b9d78261c2fd92b1b96ff41e67d`1 c6cc9ab02b2ea9ccd42c7c0497677bcc2, String ce54111a2f696be07240ffb02871e6867)
at Devolutions.RemoteDesktopManager.RDMOProxy.RDMOWebApiClient.c5f4f6c72c053c0cd60a62abeeaa43fdf[cb75a0a5d15a1ad8b8a8a5e57cca214a3](c46589b9d78261c2fd92b1b96ff41e67d`1 c6cc9ab02b2ea9ccd42c7c0497677bcc2, Boolean c1b83de17ce8f5e9f74c3df14ee979773)
at Devolutions.RemoteDesktopManager.RDMOProxy.RDMOWebApiClient.GetCustomInstallerTemplates()
at Devolutions.RemoteDesktopManager.Managers.RDMOManager.GetCustomInstallerTemplates(Boolean isPvm)
at Devolutions.RemoteDesktopManager.Forms.RDMO.FrmRDMOCustomInstallerEditor.c2347ee066ca3081e724ec5486501e093()
at Devolutions.RemoteDesktopManager.Forms.RDMO.FrmRDMOCustomInstallerEditor.DoInitializeComponent()
at Devolutions.RemoteDesktopManager.Forms.FrmBase.c2003f33b05659ffe7ea3546ebd6ce300()
at Devolutions.RemoteDesktopManager.Forms.FrmBase..ctor()
at Devolutions.RemoteDesktopManager.Forms.RDMO.FrmRDMOCustomInstallerEditor..ctor()
at Devolutions.RemoteDesktopManager.Forms.RDMO.FrmRDMOCustomInstallerManager.c96d770eca561bc7b1a6667ac64e10307(Object c19f185fd70cefc696ba148af1c4faf54, EventArgs cf1018bb83ec7debd818319fd3cb4844e)
at System.Windows.Forms.Control.OnClick(EventArgs e)
at DevExpress.XtraEditors.BaseButton.OnClick(EventArgs e)
at DevExpress.XtraEditors.BaseButton.OnMouseUp(MouseEventArgs e)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at DevExpress.Utils.Controls.ControlBase.WndProc(Message& m)
at DevExpress.XtraEditors.BaseControl.WndProc(Message& msg)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)