999Tee review for DesignO Product Personalizer

Jan. 27, 2026

We use the Design Tool on our live Shopify store. The team is responsive and usually helps close issues once escalated, but we faced multiple tickets around pricing sync/cart behaviour and checkout flow dependencies. Support eventually fixed it, but we had to follow up repeatedly and share recordings/screenshots many times. Overall good product and helpful team, but the experience would be much better with stronger testing and faster closure on critical bugs.