Possible Clues:

• "Don't sweat it"
• "It's fine!"
• 'It's all good'
• "Everything's OK!"
• 'You're good'
• Rower is on potty — nothing to be alarmed about
• ''Rest easy!'' [initials]
• 56-Across, roughly translated
• "Sure thing!"
• Row with senior sorted? That's OK