Right. It's standard nowadays for big companies to be extra diligent in ensuring users select strong passwords, or else you'll have guys setting "password" as the PW or 12345.
Pinnacle rolled out new PW requirements for their account-holders, which the OP has seemingly stumbled with. Customer service will walk him through the reset process.
As we saw with Pinnacle's announcement of the UK exit, players were given an extra 6 weeks of betting and very easy and clear instructions to withdraw balances. Whenever there is a market change in general, Pinnacle has shown that it has no problem processing a large number of transactions in a short amount of time. And as far as the OP's speculation on Canada, Pinnacle has no plans to exit the market.