Payment Gateway Setup for Peptide Business

I operate a US-based LLC that sells peptides into the Colombian market and I need a smooth, compliant way to start accepting online payments right away. My priority is the full technical and regulatory setup of a payment gateway—everything from opening the merchant account through to the live integration on my website.

Key points you should know about the job
• The store is already built; I simply need PayPal, Stripe, Authorize.net or the most suitable alternative configured, verified, and running.
• Transactions must clear seamlessly for buyers in Colombia while depositing into my U.S. business bank. Local tax rules and card-issuer restrictions sometimes block peptide sales, so your experience navigating that is essential.
• All documentation, onboarding steps, anti-fraud settings, and test transactions must be completed so I can flip the switch and begin selling.

Fluency in Spanish is important — hago la mayoría de mi comunicación en español, aunque mis registros bancarios y de la LLC estén en inglés. If you have handled similar cross-border e-commerce setups, especially for regulated or high-scrutiny products, I would love to see a concise summary of that experience along with a timeline for getting me live.