Exactly what I thought 
Take the rule constraint out.
Put ‘{REMAINING TOTAL}’ == ‘0’ in the action constraint.
Ahh yess I thought that was wrong of me to do also haha. However do I insert that constraint in the first action or second?
On the exacute automation command as you only want that to happen when there are no more payments to be made 
Looks good to me (if I am following on what your trying to do)
Alright, I did that, it shows the tendered box, but doesn’t go back to idle screen after whole amount is tendered.
I also checked my Template to ensure that I put {REMAINING AMOUNT} and not {BALANCE} to ensure that it was reading the same thing. But no luck.
Show your rule which fires the idle screen?
Try changing {REMAINING AMOUNT} to [:RemainingAmount]
In the action Fire Idle Screen?
In the execute automation command action constraint where you just put ‘{REMAINING TOTAL}’ == ‘0’
Change it to ‘[:RemainingAmount]’ == ‘0’
Ah I knew that’s where you meant, so I went ahead and did that and no luck. still doesn’t go back to Idle screen.
Found the issue…
Instead of putting ‘{REMAINING TOTAL}’ == ‘0’
I just put {REMAINING TOTAL} == 0
I just removed those " ’ " and it seemed to have worked 