Support

We answer email.

Two-person studio, no chatbots. Most questions get a real reply within 24 hours.

Read the docs

Setup, every selection type, filters, and processing — all covered.

Install errors, blank windows, missing menu items — the common fixes.

support@cellstronaut.com · 24h response. Two people, no chatbots.

I installed it and nothing happens↓

Check Extensions → Add-ons → Manage. Sheets sometimes needs a reload after install.

"Authorization required" loop↓

You're probably signed into multiple Google accounts. Sign out of all, then back in to the one you want.

Can I get a refund?↓

Yes — within 14 days, no questions asked. Email support@cellstronaut.com.

Send us as much detail as you can — Sheet permissions, screenshot of the error, browser version.