I'm trying to use the new version of Odoo Survey and survey_crm but I'm facing the following problems.

1. In the previous version there is an option of restricting number of answer per user but in this new version there is no such option (may be I don't know yet), however i tried the followings

- Quizz mode (check box): I used this but still not working any user has an option to answer twice

- In the invitation I used the last option (which is, Send private invitation to your audience(only one response per recipient and per invitation)) but still this option wouldn't prevent user answering more than once b/c of "Test" link  in the Kanban view of Survey

2. when I tried to send any invitation it popups an error saying OpenERP server error even if i successfully configure my outgoing and incoming email server but when i try it again without and modification it sends with out any error.

Your help is really appreciated