Gateway Integration for Paid Memberships

I already run a fully configured Paid Memberships Pro installation on WordPress and now need the ivno (https://ivno.io/api-docs/) payment gateway woven into it seamlessly. The integration must support recurring billing for subscription tiers, smooth one-off transactions, and reliable refund handling.

You’ll receive admin access to the staging site, along with API credentials from ivno. I expect clean, documented code that doesn’t break PMP’s update path, plus testing that proves all three payment scenarios run correctly in both sandbox and live modes.

Deliverables:
• Custom gateway module or plugin files added to Paid Memberships Pro
• Configuration inside WordPress dashboard with ivno API keys and webhooks
• End-to-end testing evidence for recurring, one-time, and refund flows
• Make live on production site

Prior experience extending Paid Memberships Pro or building custom gateways in WordPress, preferred.

Note this is for a private membership network and specialized dating platform. Must have experience configuring high-risk merchant accounts.