Fixed bug when adding a publisher teacher

app/controllers/v1/users_controller.rb

@@ -129,6 +129,10 @@ class V1::UsersController < ApplicationController
   # POST /v1/users/:id/add_teacher.json
   def add_teacher
     if @user.is_publisher?
+      if @user.submitter_request != "accepted"
+        @user.submitter_request = :accepted
+        @user.save
+      end
       render status: :ok
     elsif !approve_params.to_s.blank?
       if approve_params