There is no request token for this page


I have been trying to tweet messages from the website since last year October.
I keep getting the above message…‘there is no request token for this page’.
All along, I thought it was my aged computer, but I bought a NEW COMPUTER only last week, and I am still seeing the same message. need permission from Twitter in order for me to send out their tweets, but Twitter are not granting this permission, because a ‘request token’ is missing from my account.

Please kindly assist.