The one-time diagnostics banner
The first time you open a lab in a new browser, a small banner asks whether netplex. can collect anonymous diagnostics - no lab data, no usernames, no configs, just enough to fix bugs faster. It shows once; the choice is remembered from then on.
Anonymous diagnostics are on by default - Got it keeps them on, Opt out turns them off immediately. Either way, the banner never appears again on this browser.
Change your mind later any time from Settings → Privacy - see "Privacy, diagnostics and icon licensing" for that control.