The Retweet button is completely disabled and greyed out for my tweets. I can retweet others but my followers can’t retweet mine. Note : My account isn’t protected and has never been, I don’t beieve it’s a confidentiality issue
It has never been possible to directly Retweet your own Tweets. I’m not sure why others wouldn’t be able to Retweet you though. Unfortunately since this is not a developer API issue, we are unable to assist here. You’ll need to use the Support pages.