Add Friends Bug

I am trying to add a new friend into my list without creating a group (add a new friend function which the friend do not have SplitMyExpenses account). The friend will stuck at finish step.

I clicked on the finish but it will not load or proceed to the next step.

However, if I created a group and then add a new friend, there is no issue to proceed to finish the steps.

Could you please look into this matter?