You can do that in a jiffy. All you’ve got to do is log on to www.crowdfireapp.com > On the left side of the screen, right where you can see your current account, click on the down arrow > Click on Add Account > Choose the social network Twitter or Instagram > You'll be asked to authorize Crowdfire to track that account. That's all. :)
Make sure that you are on a paid plan (you can only add one Twitter account if you are a free user). Choose the plan that lets you add as many accounts as you wish to, and you’re all set.
Log out of Instagram app before adding account on Crowdfire.*