I'm honestly more frustrated with IRCC than usual. I understand they're trying to avoid the crazy traffic coming into the site on May 6th, but if there plan is to withhold information from us, it's the dumbest strategy. If people knew what documents they needed and if they are eligible or not then they would either do what needs to be done before May 6th or just not waste their time or money.
I've already paid for it but now they're saying "most online applications must not be paid in advance." Some of us in the immigrant community are not rich. I can scrape together the money again to pay at the time of submission, but the stress and the hassle must have a payoff.