Once you have Bitcoin or Ethereum in your Shakepay account, you can sell it by using the "Buy & sell" button either:
In the app (view instructions) or;
On the Web (view instructions)
After converting your funds to CAD, you can send a quick e-transfer to your personal bank account, using the "Send Funds" button, which is also available online as well.
The e-transfer should be in your e-mail within an hour.