Most of CIPO’s online applications for patents, trademarks, copyright and industrial designs will be offline this week: “Due to scheduled maintenance, the Canadian Intellectual Property Office (CIPO) e-commerce applications [] will be unavailable from Friday, at 8 pm until Sunday, at 10 pm (ET).”
See the CIPO announcement: https://ised-isde.canada.ca/site/canadian-intellectual-property-office/en/service-and-website-interruptions