I have a library in sharepoint online with a remote event receiver. It run ok. Some properties of de documents are modified by Microsoft.SharePoint.Client from a web aplication and them when de remote event is received another properties ara modified with the remote event receiver. I have quite a few enviroments and all run fine except one. In this one, some documents are running ok but in some moment that I haven't detected yet, this documents stop sending remote event. They never send events again.Events are also not received if I modify the document directly in sharepoint. The rest of the documents in the same library continues sending remote events.
I have tried deleting the events and re-registering them, but this does not solve the problem. I would like to know if you know why it happens and how to fix it, or how to make the document able to send events again.
Thank you.