How to install the Pabbly Connect application in Facebook account?

Hello friends,
I am trying to connect Facebook Lead form with Mailerlite Auto Responder through Pabbly connect. After connecting FB lead form and Autoresponder in Pabbly Connect, when I test in Facebook, it shows Error code 103: CRM access has been revoked from Lead Access Manager. When I go to "Leads Set-up" on Facebook page, it only gives me Zapier as the option to connect with Mailerlite and in the list of supported CRM systems, where Pabbly is not mentioned.
I contacted the Pabbly support, and they suggested to install the Pabbly Connect application in Facebook account. I am not sure how ? Could anyone guide me please?
Thanks in advance.

Regards
Som Prakash

Hey @som

Can you please check the first part and set up the Facebook integration as per that?

(Watch the first part of the video)

youtube.com/watch?v=k8jZehG5EvE

Further here's how exactly you can check if you provided proper access to Pabbly Connect in your Facebook account - https://forum.pabbly.com/threads/pages-show-up.2320/#post-10972

Thanks!