Try 1 of fixing OAuth in prod:

I am hopeful.

Client/Controllers/Account.cs

@@ -7,19 +7,26 @@ namespace Client.Controllers;
 [Route("/account/")]
 public class Account : Controller
 {
+    private readonly IConfiguration _configuration;
+
+    public Account(IConfiguration configuration)
+    {
+        _configuration = configuration;
+    }
+
     [Route("login")]
     public IActionResult Login()
     {
         return Challenge(new AuthenticationProperties
         {
-            RedirectUri = "/"
+            RedirectUri = _configuration["RedirectUri"]
         });
     }
 
     [Route("logout")]
     public async Task<IActionResult> Logout()
     {
         await HttpContext.SignOutAsync("Cookies");
-        return Redirect("/");
+        return Redirect(_configuration["RedirectUri"]);
     }
 }