Facebook notify broken? Error 400 : Unsupported post request. Object with ID 'me' does not exist, cannot be loaded due to missing permissions

Did anybody experience the issue of FB notify component no longer working after recent forced FB re-login.
Recently FB expired my session and I had to re-login into my account. Ever since that, a FB application I was using stopped working… I first thought it was an API change or code change in Home Assistant, so I took the version of code that was working before and moved it into custom_components. (so don’t mind the log saying it is custom_compoment. It is same code as currently used in HA)

I am getting below error. It may have to do with a Page Access Token… But I am not sure. I did go to the page application is using and generate a NEW Page Access token and plugged it into HA config. But that did not help.

So at the moment I am at a loss and, before I start digging deeper and spend a lot more time on this, I thought I ask here and see if anybody faced a similar issue and already fixed it.

I am using BROADCAST API from FB messenger. (actually I am the one who contributed this option to this project… So the code written in HA for BROADCAST is mine… FB API did not change… This was my first suspicion. And if this was the case, I could fix the code, but it is clearly something else.

API: https://developers.facebook.com/docs/messenger-platform/send-messages/broadcast-messages

Error Message I am getting:
2018-10-10 10:08:58 ERROR (SyncWorker_14) [custom_components.notify.facebook] Error 400 : Unsupported post request. Object with ID 'me' does not exist, cannot be loaded due to missing permissions, or does not support this operatio

Did you figure out the issue? I want to use facebook notification but also ran into this error.

No, I abandoned it for now.

After 6 years i have this same problem