Can any one help, please?

I have battled the whole day to get the autottweet to work but am getting the same problem:
"URL was not shortened for Twitter: west-net.co.za was used instead. Reason: INVALID_LOGIN"

site:
HTML Code:
www.west-net.co.za
twitter:
HTML Code:
https://twitter.com/WestNet1
What i've done so far

Reset the Twitter API
Reset the Bitly API
Deleted and reconnected the account in Bitly
Cleared history and cache
Tripple checked usernames tokens etc.

One thing i'm not sure about is curl it is enabled on my wamp but not sure how to do it on the server

Any HELP would greatly be appreciated

many thanks newbie@westnet