Well it seems you need something more.
They are always wary of people who have long careers and then apply for a relatively short course, they usually surmise that the person is applying for the program mainly to remain in Canada.
It doesn't help that it's not in your field either, they're wary of study programs which indicate a career change as well, makes the person seem less genuine.
I think you need to write a really good SOP indicating your thought process and intentions.
They are always wary of people who have long careers and then apply for a relatively short course, they usually surmise that the person is applying for the program mainly to remain in Canada.
It doesn't help that it's not in your field either, they're wary of study programs which indicate a career change as well, makes the person seem less genuine.
I think you need to write a really good SOP indicating your thought process and intentions.