Troubleshooting

Quick answers to the things that most often go sideways, roughly in the order you might meet them.

Doppio doesn't appear under Extensions in Slides

If you installed the add-on but Extensions → Doppio is missing, refresh the deck's browser tab first: Slides only picks up new add-ons on load. If it's still missing and you're in a work or school Google account, your organisation likely restricts add-ons. An admin needs to approve Doppio once in the Google Workspace Marketplace, and then it's available for everyone.

The sidebar says the extension isn't connected

Saving, suspending, and deleting polls all go through the Chrome extension, so the sidebar needs it installed, signed in, and awake. Check that the Doppio icon is in your Chrome toolbar and that you're signed in with the same Google account you're using in Slides. Two different accounts is the classic culprit.

I deleted the chart from my slide

Deleting the chart image doesn't delete the poll, so your audience would still be asked to vote on a slide showing no chart. The sidebar warns you when this happens and offers two ways out:

• Re-add chart puts the preview back on the slide. Everything carries on as normal.
• Suspend poll keeps the poll and its settings but hides it from your audience entirely. The slide behaves like any other non-poll slide until you hit Resume poll.

Suspending is also handy on its own: it's a reversible way to bench a poll for one run without rebuilding it later.

My audience is stuck on a waiting screen

The waiting screen means Doppio can find your event but no session is live: you haven't pressed Start Presentation yet, or you pressed Stop already. The screen waits for two minutes before asking people to try again, so start your session shortly before inviting the scan. Anyone who times out just scans or types the code again.

Phones stopped following my slides

The extension checks in with Doppio while you present. If your laptop sleeps or drops offline for around ten minutes, Doppio treats the show as over and stops admitting newcomers; already-connected phones stay connected. Present from a machine that stays awake and online. If you did lose the room, press Stop Presentation and then Start Presentation again, and the audience rejoins with the same code.

Someone can't join

• Check the code. It's the 5-digit code from the sidebar, typed at doppio.us.
• Check a session is running. Joining only completes while you're presenting.
• Check your plan's audience size. On the free tier with an unsettled overage, sessions are capped at 25 participants, and number 26 is politely turned away. See Plans & limits.

A session is missing from my dashboard

Sessions are filed when you press Stop Presentation in the extension. If a run isn't showing, the likeliest cause is that the laptop was closed without stopping, so make Stop Presentation part of packing up. The results of a stopped session appear in the dashboard immediately.

Votes seem off

• Each participant gets one vote per poll unless you raised Max votes in Audience Settings.
• Vote submissions are rate limited, so rapid-fire tapping doesn't stuff the ballot.
• With Show results live off, the bars hold at zero until the countdown ends. That's the reveal, not a fault.

Still stuck? Something on this page missing? Get in touch and we'll put it right.