In case you were not expecting it, the price increase after the first year should not be news to you. It is clearly stated in the plan description...

You should contact Adobe support to find out if you will receive a refund. I am not positive, but I think the 14 day grace/trial period is for starting a new subscription, not for a renewal... I think for renewals you need to cancel before the end of the subscription term comes.
Contact support - For the link below click the Still Need Help? option in the blue area at the bottom and choose the chat or phone option...
Make sure you are logged in to the Adobe site, have cookies enabled, clear your cookie cache. If it fails to connect try using a different browser.
Creative Cloud support (all Creative Cloud customer service issues)
https://helpx.adobe.com/contact.html?step=CCSN_membership-account-payment_change-or-upgrade-your-membership