I need reCAPTCHA v3 installed on two live Zen Cart stores that run side-by-side on the same server. We currently rely on an older reCAPTCHA version that is no longer keeping automated scripts out, so bots keep opening fake accounts and running stolen cards through the checkout. Scope of protection • Login forms • Entire checkout flow (from cart to payment) Key behaviours to watch • Failed login attempts • High-value transactions • Frequent account creations What I expect 1. Clean integration of reCAPTCHA v3 into the existing Zen Cart codebase for both domains, without disrupting current payment or shipping modules. 2. Admin-side controls and reporting so I can verify scores and fine-tune thresholds. 3. Thorough testing in a staging copy, followed by live deployment during a low-traffic window. 4. Clear rollback plan in case anything misbehaves. 5. Brief hand-off notes explaining how to adjust keys, site-secret pairs, and score thresholds in the future. Tech stack you’ll touch: PHP, MySQL, Zen Cart 1.5.x, Apache. I’ll supply the Google API keys and server access as soon as we agree on the plan. Delivery is complete once both sites reliably block the bad traffic yet let genuine customers log in and pay without friction.