events api not returning events.

I am calling the events api to retrieve events as follows where <next_stream_position> is some value I hold based on a previous call.

https://api.box.com/2.0/events?stream_type=admin_logs&limit=100&stream_position=<next_stream_position>

But for some reason it is not picking up any events generated after the 12th. October 2020. I have tried to call this api with different query params but still no luck. the strange thing is that this was working fine before so am puzzled why it has stopped working now.