As I said before, those of the second and subsequent generations that had successfully obtained their Canadian Citizenship certificates and became citizens before April 17, 2009 get to keep it. Those that did not make that deadline of the second and subsequent generations are no longer eligible for citizenship by descent because of the first generation limit enacted by the legislation on April 17, 2009.
The only way you would have been granted citizenship before 2009 is if your father was also a Canadian citizen (i.e.: had already gotten his citizenship certificate) when you were born, and then had applied for your citizenship certificate. I'm sorry to hear that you think it is unfair that you were not given the chance to apply because you were a minor and did not know about the law, but in the eyes of the government, the parent is responsible for the well-being of the child. Even today, a parent or guardian is responsible for filling out and signing their child's citizenship application, if the child is under the age of 14. Don't take this as setback though; now that you are an adult and if you still want to be a Canadian citizen, you can apply to immigrate and follow the path to citizenship by naturalizing in Canada.
No, that does not apply to you. Again, your father had to be a Canadian citizen before you were born for you to qualify for citizenship by descent. FYI,
Section 8 is what second and subsequent generation citizens by descent have to do to retain their citizenship before the age of 28, otherwise they lose it:
"Citizens born abroad
8 Where a person who was born outside Canada after February 14, 1977 is a citizen for the reason that at the time of his birth one of his parents was a citizen by virtue of paragraph 3(1)(b) or (e), that person ceases to be a citizen on attaining the age of twenty-eight years unless that person
- (a) makes application to retain his citizenship; and
- (b) registers as a citizen and either resides in Canada for a period of at least one year immediately preceding the date of his application or establishes a substantial connection with Canada."
Section 8 got repealed with the 2009 legislation, so only those born between February 15, 1977 (when section 8 was enacted) and April 16, 1981 are subjected to it because only those people would hit their 28th birthday before it was repealed in 2009.