Webhook notifications

[skyjewelry.shop]

Hello everyone, I am working on integration with the Ebay platform using TradingAPI. And I encountered a problem that I cannot solve, if you can help me with something, I will be very grateful.
The problem occurs with notifications "Platform Notifications".
I subscribed to the events FixedPriceTransaction, AuctionCheckoutComplete, ItemSold, ItemSuspended, ItemUnsold but the events do not always arrive, and I cannot understand the reason and logic. For example, I have products that were sold, but notifications for them never arrived to my resource (ApplicationURL).
Please tell me:
1. Can I somehow manage notification settings through the seller's personal account
2. Can I check for a specific product, check which events will work (for example, by ItemID, find out which notifications will be sent when selling and where)
3. View the notification sending log (in the seller's account)
Or maybe you have some other information on this issue that you can share. Thanks in advance, as on the receiver side (ApplicationURL) I can't figure out the reason why notifications are not working correctly.

[developer_support@ebay]

Hi @skyjewelry.shop,

You can use the GetNotificationPreferences API call to retrieve the current notification preferences for your application. This can help you verify if the settings are correctly configured.

Use the GetNotificationsUsage call to retrieve information about platform notifications sent to a given application. Use GetNotificationsUsage to confirm you are being sent all the platform notifications to which you have subscribed or to troubleshoot problems with notification delivery.

For more information, see the Knowledge Base article for Triaging a Platform Notifications Problem. 

[skyjewelry.shop]

I didn't get any useful information when calling "GetNotificationPreferences", and I also tried to get information by calling "GetNotificationsUsage" but I get error 10007 in response (I tried several times, on different days). I'm attaching screenshots of the request/response, maybe you can give more information?

Request:

Response:

[developer_support@ebay]

Hi @skyjewelry.shop,

When executing GetNotificationsUsage call you need to specify the ItemID in the request as it is a required field for the call.