You can. For example, as long as you lived in any city in Ontario for a year, you can apply for Ontario Works (for self-employed or people who never had jobs). EI is for people who had jobs (T4 jobs).
They tend to only approve your application if you worked (any job), instead of applying for welfare right after landing.
I know someone whose application is stuck because he seldom worked (on welfare ALL the time since landing).
You logged in too many times. Their website thinks you're either a bot or initiating a DDOS attack....so they blocked your IP for a certain amount of time.