Evrone has collaborated with a cryptocurrency payment platform for several years, enhancing its functionality and scalability. Key achievements include linking B2B and B2C operations with a brokerage service, optimizing Ruby-based systems with Go for better performance, and improving user refund procedures. B2B advancements include subscription features, mass payouts, automated payments, payment widgets, and transaction approval systems. Evrone's support concludes as the client continues development independently.