It says Phone number is already registered when I try to create account on my iphone

When I try to install and register niyo global app on my iOS, it says "phone number already registered and doing nothing. I am trying to get a niyo forex card since I am planning to travel abroad. Please act on this asap.
Thanks.

Hey @rsurampudi! Welcome to Niyo Community!

As we’ve checked, we noticed that you already hold a Niyo Global by SBM account with us. Therefore, we’d request you to log in to the app (link shared below) using the registered mobile number provided upon onboarding to proceed further.

App Store link: Join the Niyo SBM beta - TestFlight - Apple

Gracias,