Why there are no COUPON and COMMUNICATIONS tabs in my Membership plugin?

Hi,

I just installed the Membership plugin on my site, and I realized I am missing the tabs for the email communications and for the coupon. I will send the screenshot in the following post (I cannot in this post).

I had tested the plugin before, and I had those tabs. Now I don't have them anymore.

Maybe the plugin is not working properly now?
In fact, i tried a paypal transaction to test, and - despite the paypal account that receives the money is a business account - i got the mssage - when redirected to the site from Paypal - that data was transmitted in "clear".

Please help!!!
Thank you

Letizia