Unable to send event via EventBridge

I am trying to set up to receive alerts from Amazon EventBridge partners Selling Partner API (SP-API).

Through the api already created destination and subscriptions. Associated with the event bus and created an API destination, Created a role in which only the account was specified as a pattern, as described in the documentation:

{
  "account": [
    "1234567890"
  ]
}

to increase the chance of receiving an event at an endpoint represented by an external server.

I tried to create a custom bus, tied roles to it and tested it on several services, my own and https://webhook.site

I tried to reproduce exactly the same actions as demonstrated in this video from the documentation https://docs.aws.amazon.com/eventbridge/latest/userguide/eb-api-destinations.html

But not a single event reached the endpoint. Even what was exactly reproduced in the video above

Can you tell me the scheme in which an event is generated in the aws.partner/sellingpartnerapi.amazon.com bus and can be transmitted to an external service outside of AWS in the form of a webhook, according to the same principle as shown in the video from the documentation?

What needs to be taken into account when configuring where you can look for answers, I unfortunately reached a dead end, I will be grateful for any help.