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Help center

How can we
help?

Most questions are covered below. If yours isn't, write to us — a person reads every email.

Common questions

Plainly answered.

How long does shipping take?
Standard US shipping is 3–5 business days. Expedited is 1–2 business days. International varies — usually 7–14 business days.
Can I add a personal note to a gift?
Yes — there's a notes field at checkout. We handwrite gift notes on the inside cover of the box.
Are the cubes waterproof?
They're premium cardstock with a soft matte finish. Splashes are fine; submerging is not.
How do I redeem a puzzle code from a card?
Sign in and visit Puzzles → Add Puzzle. The code is on the back of every card.

Still stuck?

Email support@zudocube.com and we'll get back to you within one business day.