Thanks for you interest in Quickblox.
Here is response to your questions:
1. Register/login methods - https://quickblox.com/developers/SimpleSample-users-android
2. Chat - https://quickblox.com/developers/Android_XMPP_Chat_Sample
3. New pricing plan attached.
Please do not reply directly to this email.
If you have any questions or comments regarding this email, please contact us at https://assist.quickblox.com/
QuickBlox assistance team
Registered address: 4 Mulberry Avenue Staines-Upon-Thames, United Kingdom
+1 (415) 755-8221 (US) , +44 (0) 20 3290 6202 (UK)