I just did some ATC-ing at ULLI, and when I ended my session, it showed a new number for Session Operations Total, but 0 for Session Operations during Session, my home page does not yet show updated and neither are my stats on my profile (although this might update.)
This is a known issue, I believe. Even though it shows 0 operations on the session summary screen it should update in the app. It can take a while sometimes and a lot of the time an app restart or doing a short flight on any server will cause your stats to refresh including your operation count.
Let us know if this works and if you have any other additional questions or concerns.