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Try to use MT Enhanced Trados Plugin, I have this error: "one or more error occurred"

When I try to open my project Studio, I have this warning "The Translation provider 'MT Enhanced using Microsoft Translator" could not be opened and has been disabled', so I removed it, and try to add it again I have this error "one or more error occurred" (See the attached the detailed error), Can someone help me with that?

sdlerror-2020817-13h24m15s.sdlerror.xml
<SDLErrorDetails time="2020-08-17 1:24:36 PM">
  <ErrorMessage>One or more errors occurred.</ErrorMessage>
  <Exception>
    <Type>System.AggregateException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</Type>
    <HelpLink />
    <Source>Sdl.Community.MtEnhancedProvider</Source>
    <HResult>-2146233088</HResult>
    <StackTrace><![CDATA[   at Sdl.Community.MtEnhancedProvider.MstConnect.ApiConnecter.GetAuthToken()
   at Sdl.Community.MtEnhancedProvider.MstConnect.ApiConnecter..ctor(MtTranslationOptions options)
   at Sdl.Community.MtEnhancedProvider.MtTranslationProviderWinFormsUI.Browse(IWin32Window owner, LanguagePair[] languagePairs, ITranslationProviderCredentialStore credentialStore)
   at Sdl.TranslationStudio.Common.TranslationMemory.TranslationMemoriesControl.pluginContextMenuStripItem_Click(Object sender, EventArgs e)
   at System.Windows.Forms.ToolStripItem.RaiseEvent(Object key, EventArgs e)
   at System.Windows.Forms.ToolStripMenuItem.OnClick(EventArgs e)
   at System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e)
   at System.Windows.Forms.ToolStripItem.HandleMouseUp(MouseEventArgs e)
   at System.Windows.Forms.ToolStripItem.FireEventInteractive(EventArgs e, ToolStripItemEventType met)
   at System.Windows.Forms.ToolStripItem.FireEvent(EventArgs e, ToolStripItemEventType met)
   at System.Windows.Forms.ToolStrip.OnMouseUp(MouseEventArgs mea)
   at System.Windows.Forms.ToolStripDropDown.OnMouseUp(MouseEventArgs mea)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   at System.Windows.Forms.ToolStrip.WndProc(Message& m)
   at System.Windows.Forms.ToolStripDropDown.WndProc(Message& m)
   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)]]></StackTrace>
    <InnerException>
      <Type>System.Net.Http.HttpRequestException, System.Net.Http, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</Type>
      <HelpLink />
      <Source>System.Net.Http</Source>
      <HResult>-2146233088</HResult>
      <StackTrace><![CDATA[   at System.Net.Http.HttpResponseMessage.EnsureSuccessStatusCode()
   at Sdl.Community.MtEnhancedProvider.MstConnect.ApiConnecter.<GetAccessTokenAsync>d__21.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   at Sdl.Community.MtEnhancedProvider.MstConnect.ApiConnecter.<>c__DisplayClass20_0.<<GetAuthToken>b__0>d.MoveNext()]]></StackTrace>
    </InnerException>
  </Exception>
  <Environment>
    <ProductName>SDL Trados Studio</ProductName>
    <ProductVersion>15.0.0.0</ProductVersion>
    <EntryAssemblyFileVersion>15.2.4.1693</EntryAssemblyFileVersion>
    <OperatingSystem>Microsoft Windows 8.1 Enterprise</OperatingSystem>
    <ServicePack>NULL</ServicePack>
    <OperatingSystemLanguage>1033</OperatingSystemLanguage>
    <CodePage>1252</CodePage>
    <LoggedOnUser>RES\z82886</LoggedOnUser>
    <DotNetFrameWork>4.0.30319.42000</DotNetFrameWork>
    <ComputerName>5CG8201R75</ComputerName>
    <ConnectedToNetwork>True</ConnectedToNetwork>
    <PhysicalMemory>16654928 MB</PhysicalMemory>
  </Environment>
</SDLErrorDetails>