A. If you will be accepting payments with First Data or Authorize.net, then yes we advise getting an SSL certificate, and you very likely could be required to get one anyways.
If not using either of those payment processors for this software, then it is not required but still can be beneficial. There are other benefits of having SSL such as a slight SEO boost with Google and a more secure members area. Between the certificate and installation fees it costs over $50-100/yr to have SSL.
A. 
1- when editing the page click the Page Settings from top menu -> Password Protect, and you will see an option for password protection where you can turn it on to have it password protected.
Then click save changes.
2- Now this page will redirect to http://YOURDOMAIN/leadlogin.php
Each contact has a password assigned to them. You can put the password into an email sent to them using the code ~password~.
You can view/edit the password when editing the contact.
A. Yes, it will suspend them. We caution to be careful if you have more than 1 tier, or an admin payment because the person gets logged out when only 1 of their possible many subscriptions is canceled.
A. By default PayPal IPN is enabled. It is only turned off if you have previously turned it off in your PayPal account. You can verify it is off if there is no record in the access log when a PayPal payment is made.
To turn on the PayPal IPN follow the instructions below.
- Login to your paypal Business account
- Go to Profile -> My Selling Tools
- Select Instant Payment Notifications -> Update
- Click choose IPN settings
- Select receive IPN Messages and leave Notify URL empty then click save
