TOPIC:

I don't see the EULA available anywhere on the website. Is there a link?

Is the license a one-time price per package? Are future library upgrades free, or would they require a new license?

Also, why do you send our registration passwords to us in e-mail in plain text? Your lack of concern for our privacy and security makes me worried about what kind of product you deliver... a serious company would store a salted hash of our passwords and not be able to send it to us in plain text!

maybe you need download demo project package.
and EULA placed in "docs" subdir

As told by Radaee you will find it in docs folder within the SDK/demo package.
You will seein your browser before the SDK package itself.
A direct link is: www.androidpdf.mobi/javadocs/license.pdf

Library update are available for free each time we will publish them on our website.

The registration email contains original registration information. If the website should send the email with an encrypted password users wouldn't be able to read it.
Passwords are stored as encrypted on our database and no one of our team is able to read them both via administration interface or directly on the website.