I’m having a similiar issue, when I click on Update Permissions, it redirects me to business.facebook.com but the only option to log in is via Instagram, when I do it, a message pops up saying I need to log in with facebook. But when using the redirect button there is no “log in with facebook”. Side not, If I visit just the business.facebook.com, both option appears. It seems the link manychat provides is kinda bugged. 

Also, I spent 2 hours with Meta Support via phone call, trying several ways to fix it, but their conclusion was “talk to manychat”. I already sent a support ticket to manychat this morning (12 hours ago), but so far no reply. 
So, here I am to check if someone from the community solved this issue. 

I also have this issue. I have a ticket in with Manychat support that apparently has been escalated to high priority. I’ve not heard anything back yet. It’s so frustrating!

yep….. I’m having the exact same issue, it’s so frustration! 

Has anyone had this issue resolved yet? ​@Mel E ​@Restav ​@Madacid 

Still having the issue. The “workaround” where you replace ig with fb manually in the browser didn’t work for me either. 

Same, I have refreshed permissions multiple times, followed all the help articles, and am stuck in the same loop as well. How can we fully resolve this? The required permission that it is making us add is not expressed so I don’t know how to research this any further. 

Same exact problem. Its been 4 days trying to solve it.