Problema su model con tipo Enum

Ciao,

ho un problema con un enum. Se dalla GUI cambio il valore nel controller non mi arriva.

Model 

 public enum GameProviderLoad
  {
       AA,
       BB,
       CC
  }
  public class GamesListViewModel
   {
      
       public GameProviderLoad GameProviderLoad { get; set; }
       public IEnumerable<SelectListItem> GameProviderList
       {
           get
           {
               var priorityType = typeof(GameProviderLoad);
               var priorityValues = Enum.GetValues(priorityType).Cast<GameProviderLoad>();
               var converter = TypeDescriptor.GetConverter(priorityType);
               return
                   from priorityValue in priorityValues
                   select new SelectListItem
                   {
                       Text = converter.ConvertToString(priorityValue),
                       Value = priorityValue.ToString(),
                   };
           }
       }
   }

Controller

      [HttpGet("administrator/games/fetch")]
       public async Task<IActionResult> FetchGames(GamesListViewModel model)
       {
           switch (model.GameProviderLoad)
           {
               case GameProviderLoad.AA:
                   await AAService.FetchAndUpdateGamesAsync();
                   break;
               case GameProviderLoad.BB:
                   await BBService.FetchAndUpdateGamesAsync();
                   break;
               case GameProviderLoad.CC:
                   await CCntegrationService.PragmaticLobby.FetchAndUpdateGamesAsync();
                   break;
           }
           
           return View("~/Views/Administrator/Games/GamesList.cshtml", new GamesListViewModel { Games = await Game.GetAllAsync() });
       }

View

<div class="page-header">
   <h2>@_s("Stored Games")</h2>
   <div class="text-center pt-4">
       @Html.DropDownListFor(m => m.GameProviderLoad, Model.GameProviderList, @_s("Please select the provider"))
   </div>
   <div class="text-center pt-4">
       <a class="btn btn-primary" href="/administrator/games/fetch">
           <em class="fas fa-cloud-download-alt"></em>
           @_s("Fetch Games")
       </a>
       <button class="btn btn-success" type="submit" form="game-order-form">@_s("Save Order")</button>
   </div>
</div>

GameProviderLoad rimane fisso a AA.

Grazie per il prezioso aiuto.
Simone