I have installed this constant us plugin and when I tried to add email and lable I get this error:

Type:     Exception
Message:     SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '22605-3' for key 'keyId'
File:     /home/hello/public_html/amigote.com/ow_core/database.php
Line:     707
Trace:     #0 /home/hello/public_html/amigote.com/ow_core/database.php(707): PDOStatement->execute() #1 /home/hello/public_html/amigote.com/ow_core/database.php(460): OW_Database->execute('INSERT INTO `ow...', Array) #2 /home/hello/public_html/amigote.com/ow_core/database.php(496): OW_Database->insert('INSERT INTO `ow...', Array) #3 /home/hello/public_html/amigote.com/ow_core/base_dao.php(216): OW_Database->insertObject('ow_base_languag...', Object(BOL_LanguageValue)) #4 /home/hello/public_html/amigote.com/ow_system_plugins/base/bol/language_service.php(169): OW_BaseDao->save(Object(BOL_LanguageValue)) #5 /home/hello/public_html/amigote.com/ow_plugins/contactus/bol/service.php(83): BOL_LanguageService->addValue(3, 'contactus', 'dept_1', 'info') #6 /home/hello/public_html/amigote.com/ow_plugins/contactus/controllers/admin.php(84): CONTACTUS_BOL_Service->addDepartment('info@amigote.co...', 'info') #7 [internal function]: CONTACTUS_CTRL_Admin->dept(Array) #8 /home/hello/public_html/amigote.com/ow_core/request_handler.php(266): call_user_func_array(Array, Array) #9 /home/hello/public_html/amigote.com/ow_core/application.php(347): OW_RequestHandler->dispatch() #10 /home/hello/public_html/amigote.com/index.php(73): OW_Application->handleRequest() #11 {main}