Split Pay is one account per person. Your eligibility, your payment account numbers, and your payment history are tied to you — verified by your SSN — and they exist on exactly one account: your main account. A second account wouldn't have any of that, which is why creating one isn't possible.
If you sign in or sign up with a different email but a matching phone number, we'll show you your main account's email so you can sign into the right place. Any extra accounts from the past were closed as duplicates — everything you've built with Split Pay lives on your main account.
If you can't access the email on your main account, don't start over — see I lost access to the email on my Split Pay account — what can I do?