we're here to help.

For questions about Cells, c3, g7, pulse, or the ribo CLI — email us and we'll get back to you quickly.

If signup wouldn't go through, an automated check turned it down. No one reviewed your details, and it isn't a judgement about you — the checks read the network you connected from and the email domain you used, nothing else. The usual cause is a VPN, a company proxy, or a cloud desktop, so the first thing worth trying is signing up again from your home or office connection. The other common one is an email provider we don't accept for new accounts; an address you'll still have next month works.

If neither of those is it, write to support@tissue.systems and we'll open the account by hand. Send the email address you tried, roughly when you tried it, and the message the form gave you. That's what we need to find the block and clear it.

Chat with me and other builders — often the fastest way to get unstuck.

Most answers are in the docs. Check the Quick Start, the ribo CLI Reference, or the c3 API Reference.

We typically respond within one business day. For urgent issues affecting production Cells, include "urgent" in your subject line.