The app launched on Presidents’ Day, 21 February, but six weeks later is beset by problems. A waiting list of nearly 1.5 million are unable to use it.
Truth Social might look like Twitter, but it isn’t available on Android phones, web browsers or, apparently, to most people outside the US.
“It’s been a disaster,” Joshua Tucker, director of NYU’s Center for Social Media and Politics, said.
And a Republican ally of Mr Trump’s, who did not wish to be identified, said: “Nobody seems to know what’s going on.”