Client Portal - Bank Verification

I am using the hosted version of Invoiceninja.

I created a test invoice of $1 to verify if my clients can make payments. However, it asks me to add a routing number - i have double triple checked the routing number - it is correct but it gives me a message saying ‘Unknown Bank’ just below where i fill up the routing number.

Why is it doing that? What is it expecting in the routing number field?

I assume the app is failing to find the bank from it’s routing number.

Here’s the source file we use, maybe it needs to be updated?