With Canvas currently being held hostage by a hacker group and the whole system being down there's little (if anything) your Professor can do right now. There's honestly little your school can do right now outside of paying the hackers, which may or may not bring back access anyway. Everything is in Canvas' court to fix things and get them up and running.
So if you're worried about deadlines I'd recommend:
- asking your professor for an extension. Tell em canvas is 100% down everywhere right now, even link them to a news article or something if you want. It's also 99% likely your school emailed them about the outage and what they plan to do.
- if your prof doesn't get back or says 'no', keep pushing. this is something outside of your or your school's control and should not negatively impact your grade. would be kinda fucked up if it did.
- in that end, if you still dont get an extension, reach out to the Department Dean for your class. So for english it's the Dean of English or Humanities (most likely), Math is Dean of Mathematics, etc. They are your professor's boss and will be more 'in the loop' about what's going on behind the scenes and what the school plans to do for everyone.
- worst comes to worst, they also didn't respond or said no? Reach out to the head of the school or the head of Instruction/Student Services. names change based on school(s), but they are higher up in the food chain.
basically, take a breath, relax a bit. this is hitting thousands of schools and students. it would be insanely unfair for a professor to give you nothing in response to something you both can't control.
EDIT: also give folks some time! this just happened and school's are slow for...well, anything. getting a response out or even knowing what to respond may take them a couple hours.