Thank you for bringing this to our attention! Was the campaign still set as scheduled when you attempted to create a social share post? This is a helpful detail to have as we are continuing to troubleshoot this experience. I have taken a look at your most recent campaign and can see this post did in fact fail to publish. With that said there should be an option on the failed post to "Want to send it now?"
Clicking this button on the post should publish your post now that your campaign has sent. Did clicking send it now work for you? Manually sharing your campaign through its permanent URL instead is the second workaround we suggest as well.
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