I never had this issue before so I was quite shocked with what happened to me.
There were tons of assignments in my art appreciation class and I didn't see any due dates on dropbox (we are using D2L) so I contacted to my instructor. Couple of hours later I got a response from her saying "I fear that you are not going to be able to pass this class", apparently between this hours she also uploaded every single grade from beginning of the semester until 5th week of the semester. At this point I realized there were assignments with due dates. On the syllabus, there were dates stated with assignments but there was only one with due date from over 10 assignments. Because of any due dates on Drop Box and one due date on syllabus, I wasn't aware of due date. I told her why I confused and she said I didn't even read the syllabus and there was a separate document called Homework Policies. There are over 60 documents in this class and I thought syllabus is supposed to give you information of Homework Policies as well. Also I already read my syllabus weeks ago. In the email she also said "It is your responsibility to ask about this information in a timely manner." That is true and I agree that I am lazy, but she didn't put any due dates in either drop box or syllabus (one from syllabus which is still before due date) and even in that situation I was able to notice issue earlier if she uploaded at least a single grade and not delaying until 5th week of when I was asking question about assignments.
I am taking 13 credits and this class worth 3 credits which means if I drop this course I will be below 12 but I already lost quite decent grade in this class from not knowing due dates and I seriously don't want to stay in this small class where I have to face her everytime. I am concerning to talk to my adviser because that's what I believe adviser is for but based on how she usually advice me with courses and degree, she is quite careless person which makes me not sure what I need to do for this semester. I know there were mistakes from me but still there are parts she caused confusion in her guideline. Can someone advice with what I should do with this?