Why are my IFTTT applets only adding posts to one of my social accounts?
While you're connecting your Buffer account to IFTTT, you'll need to authorize IFTTT to access your Buffer account. After that you'll be prompted to choose which social account you’d like the posts to be sent to. Unfortunately, only one social account that is connected to Buffer can be connected to your IFTTT account.
This means that any applets you create where Buffer is the action service, can only add posts to one of your queues. The social account that you choose is tied to your IFTTT account as opposed to be tied to a specific applet that you create. Therefore it is not possible to create separate applets where a different social account is chosen. The only workaround for this would be to set up completely separate IFTTT accounts under different email addresses.
We have found this to be one of the key reasons that some customers choose to use Zapier instead of IFTTT. When creating zaps, you'll also only be able to choose one social account. However, you're then able to duplicate your zap and edit the social account to create a new version, thus being able to send posts to multiple queues within Buffer.