diff --git a/src/Yavsc.Api.Test/RdvQueryApiControllerTests.cs b/src/Yavsc.Api.Test/RdvQueryApiControllerTests.cs
index 668814239..fcd87f9a3 100644
--- a/src/Yavsc.Api.Test/RdvQueryApiControllerTests.cs
+++ b/src/Yavsc.Api.Test/RdvQueryApiControllerTests.cs
@@ -112,35 +112,4 @@ public sealed class RdvQueryApiControllerTests : IClassFixture<ApiWebServerFixtu
         Assert.NotNull(created);
         Assert.Equal("alice", created!.ClientId);
     }
-
-    [Fact]
-    public async Task PostQuery_accepts_local_datetime_and_persists_as_utc()
-    {
-        _fixture.ResetAndSeedRdvQueryGraph();
-        using var http = NewClient(subject: "alice");
-
-        var localEventDate = DateTime.Now.AddDays(2);
-        var createPayload = new
-        {
-            ActivityCode = "dev",
-            PerformerId = "alice",
-            Consent = true,
-            EventDate = localEventDate,
-            Location = new
-            {
-                Address = "3 rue du Test",
-                Latitude = 48.8568,
-                Longitude = 2.3524,
-            },
-            Reason = "Rendez-vous date locale",
-            Status = QueryStatus.Inserted,
-        };
-
-        var createResponse = await http.PostAsJsonAsync("/api/v1/billing/Rdv", createPayload, TestContext.Current.CancellationToken);
-        Assert.Equal(HttpStatusCode.Created, createResponse.StatusCode);
-
-        var created = await createResponse.Content.ReadFromJsonAsync<RdvQuery>(TestContext.Current.CancellationToken);
-        Assert.NotNull(created);
-        Assert.Equal(DateTimeKind.Utc, created!.EventDate.Kind);
-    }
 }
diff --git a/src/Yavsc.Api/Controllers/Business/RdvQueryApiController.cs b/src/Yavsc.Api/Controllers/Business/RdvQueryApiController.cs
index 48e3be2e1..dd2982138 100644
--- a/src/Yavsc.Api/Controllers/Business/RdvQueryApiController.cs
+++ b/src/Yavsc.Api/Controllers/Business/RdvQueryApiController.cs
@@ -67,7 +67,6 @@ public class RdvQueryApiController : Controller
         var uid = User.GetUserId();
         // Security: the caller always posts for themselves.
         query.ClientId = uid;
-        query.EventDate = EnsureUtc(query.EventDate);
 
         ModelState.Remove("Client");
         ModelState.Remove("ClientId");
@@ -141,7 +140,7 @@ public class RdvQueryApiController : Controller
         existing.ActivityCode = query.ActivityCode;
         existing.PerformerId = query.PerformerId;
         existing.Consent = query.Consent;
-        existing.EventDate = EnsureUtc(query.EventDate);
+        existing.EventDate = query.EventDate;
         existing.LocationType = query.LocationType;
         existing.Reason = query.Reason;
         existing.Status = query.Status;
@@ -207,14 +206,4 @@ public class RdvQueryApiController : Controller
     {
         return _context.RdvQueries.Any(e => e.Id == id);
     }
-
-    private static DateTime EnsureUtc(DateTime value)
-    {
-        return value.Kind switch
-        {
-            DateTimeKind.Utc => value,
-            DateTimeKind.Local => value.ToUniversalTime(),
-            _ => DateTime.SpecifyKind(value, DateTimeKind.Utc)
-        };
-    }
 }
diff --git a/src/Yavsc.Org/Controllers/Accounting/AccountController.cs b/src/Yavsc.Org/Controllers/Accounting/AccountController.cs
index 44927d461..77e0e32a4 100644
--- a/src/Yavsc.Org/Controllers/Accounting/AccountController.cs
+++ b/src/Yavsc.Org/Controllers/Accounting/AccountController.cs
@@ -467,25 +467,8 @@ IHtmlLocalizerFactory htmlLocalizerFactory,
 
             if (ModelState.IsValid)
             {
-                var existingUser = await _userManager.FindByEmailAsync(model.Email);
-                if (existingUser is not null)
-                {
-                    ModelState.AddModelError(nameof(model.Email), _localizer["DuplicateEmail"]);
-                    return View(model);
-                }
-
                 var user = new ApplicationUser { UserName = model.UserName, Email = model.Email };
-                IdentityResult result;
-                try
-                {
-                    result = await _userManager.CreateAsync(user, model.Password);
-                }
-                catch (DbUpdateException ex) when (IsDuplicateEmailViolation(ex))
-                {
-                    _logger.LogWarning(ex, "Registration rejected: duplicate email '{Email}'.", model.Email);
-                    ModelState.AddModelError(nameof(model.Email), _localizer["DuplicateEmail"]);
-                    return View(model);
-                }
+                var result = await _userManager.CreateAsync(user, model.Password);
                 if (result.Succeeded)
                 {
                     _logger.LogInformation(3, "User created a new account with password.");
@@ -534,21 +517,6 @@ IHtmlLocalizerFactory htmlLocalizerFactory,
             return View(model);
         }
 
-        private static bool IsDuplicateEmailViolation(Exception exception)
-        {
-            for (var current = exception; current is not null; current = current.InnerException)
-            {
-                if (current is PostgresException pg
-                    && pg.SqlState == PostgresErrorCodes.UniqueViolation
-                    && string.Equals(pg.ConstraintName, "AK_AspNetUsers_Email", StringComparison.Ordinal))
-                {
-                    return true;
-                }
-            }
-
-            return false;
-        }
-
         [Authorize, HttpPost, ValidateAntiForgeryToken]
         public async Task<IActionResult> SendConfirationEmail()
         {