Every Pin needs a board. When you add Pinterest to a post, pick the board it should publish to. A post without a board selected will not publish.If a board you expect is missing, it was created after you connected. Reconnect the channel to refresh the board list.
“My Pin didn’t publish.” Usually no board was selected. Open the post and choose one.“My new board isn’t listed.” Reconnect the channel to refresh boards.“Pinterest keeps disconnecting.” Pinterest expires access periodically. See Reconnect a channel.