pagination

hey guys. this is the second day and i think i have tried every solution but all in vain. i need a pagination on my custom post page.

here is my page code

[Code moderated as per the Forum Rules. Please use the pastebin]

now – this code gets the post but when i go to _previous_ the url shows Page/2 but i see only the same posts from page 1

Any ideas. pleaaase?? thx