lib/pleroma/mfa/totp.ex

@@ -34,7 +34,7 @@ defmodule Pleroma.MFA.TOTP do
   defp default_digits, do: Config.get(@config_ns ++ [:digits])
 
   defp default_issuer,
-    do: Config.get(@config_ns ++ [:issuer], Config.get([:instance, :host]))
+    do: Config.get(@config_ns ++ [:issuer], Config.get([:instance, :name]))
 
   @doc "Creates a random Base 32 encoded string"
   def generate_secret do

lib/pleroma/web/pleroma_api/controllers/two_factor_authentication_controller.ex

@@ -41,7 +41,7 @@ defmodule Pleroma.Web.PleromaAPI.TwoFactorAuthenticationController do
   def setup(%{assigns: %{user: user}} = conn, %{"method" => "totp"} = _params) do
     with {:ok, user} <- MFA.setup_totp(user),
          %{secret: secret} = _ <- user.multi_factor_authentication_settings.totp do
-      provisioning_uri = TOTP.provisioning_uri(secret, "#{user.ap_id}")
+      provisioning_uri = TOTP.provisioning_uri(secret, "#{user.email}")
 
       json(conn, %{provisioning_uri: provisioning_uri, key: secret})
     else