Hi @MeredithL009. I took a look at your most recent draft and was able to add new social channels. Please see our article on editing the social follow block.
While editing a new test campaign, I came across an issue with the Add Network dropdown not appearing when attempting to add new social channels. I'm not sure if this is what you may have been experiencing. If so, try resizing your browser and then maximizing it. Once I did that, the Add Network dropdown appeared again.
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