Hi.
Try to unlock the key pad:
press STOP TIME and CANCEL at the same time for 5 sec.
If that doesn't help - replace the clock/control board
Part number: 5701M680-60
Here are the breakdown diagrams and
Replacement parts for Maytag PER5710BAW RANGE- S/C F/S ELE | AppliancePartsPros.com
Thank you. Post the results.
Simon.