As a seasoned developer with strong expertise in mobile app development, I have the deep understanding needed to troubleshoot and resolve complex issues like the one you're facing with your Ionic application. My experience with Ionic 5 and proficiency in NodeJS will allow me to effectively work with both iOS and Android to identify, debug, and fix the problem causing the payment failures.
Moreover, my career has given me hands-on experience working with payment gateways, especially Stripe. Combining this knowledge with my familiarity in the Apple Pay ecosystem, I've successfully integrated Apple Pay numerous times, ensuring seamless and secure transaction processes for users.
By choosing me for this project, you gain not just a capable developer but also a dedicated individual who believes in continuous improvement. I'll leverage my skills in debugging, troubleshooting and creativity to get to the root of these issues and provide a long-lasting solution. Rest assured that I am focused on delivering high quality products/solutions on time, and I'm eager for the opportunity to solve this challenge for you.