The Child Tax Credit Payment rounds up by a dollar due to the credit ending in $0.50 showing we received one dollar more than we did. How do I fix this?

The IRS requires rounding. Accept the value given by the program. 

Round up one of the amounts and round down the other person's amount.  Only the total gets reconciled.  

See Critter's answer and screen shot on this one,
https://ttlc.intuit.com/community/taxes/discussion/re-entering-2-child-care-advance-payments-of-89-50-total-of-179-turbo-tax-rounds-up-both-amounts-to/01/2427414#M865501