Activation funnel leaks

I'll build the signup → activated funnel in Amplitude, find the worst step, then cross-check support tickets and error rates to separate a confusing UX from a broken one.

The cliff is "Connect a data source" - a 56% drop, by far the worst step. Digging into whether people are confused or whether the connect flow is failing.

The funnel loses most people at one step. From 4,180 signups, only 22% reach first value, and the cliff is "Connect a data source" - a 56% drop, far worse than anything else. Two causes, both fixable: (1) a Safari OAuth bug - 23% of callbacks 4xx and the popup silently closes, so Safari connects at 61% vs 88% on Chrome; and (2) choice overload - showing all 9 sources at once converts 12 points lower, and 12 tickets literally ask "which one first?". Fix those two and the model recovers roughly +9 points of activation. Full breakdown and the test plan are open in Libra Computer.