Start by clearing your browser cache, then log back into your MyCRA account; if the issue persists then give them a call at 1-800-959-8281, their system may be under maintenance at the time you were attempting to sign on. Good luck!
Footnote: We at TurboTax want to encourage you and your close family to take all necessary precautions to ensure your safety. Please review the articles provided below for more information during these difficult times: