Late users are able to pay more than the total round amount

[nitabx]

Describe the bug
When a user is late on payments, they are able to pay many times, even more than the total payment of the round. Once a payment is done the user still shows the late payment counter as if no payment was done and the payment is not reflected in totalCashIn or the user variables.

To Reproduce
Steps to reproduce the behavior:

1. During the round one user misses a payment
2. User executes addPayment function several times

Expected behavior
Once a user with late payments executes addPayment the latePayment and totalCashIn varibles should be updated accordingly

Screenshots
NA

Smartphone (please complete the following information):

• Device:
• OS: Android
• Browser: Metamask
• Version:

Additional context
NA