How do I switch Facebook accounts associated with Manychat?

Hi there!  When I signed up for  Manychat, my personal Facebook page was attached to my Instagram account.  So, my login on Manychat was my personal Facebook page, but automations would go out to my Instagram business page.  I now have a business Facebook page, and today I switched over my Instagram account to be attached to my business Facebook page.  Unfortunately, now my Manychat account is still linked to my personal Facebook page and no automations are going out to Instagram.  I need to somehow redirect Manychat to my new Facebook business page and I’m seeing no way to do this with exception of deleting and starting over.  It won’t let me add the Instagram page, because it is already attached.  Help!  And thank you!