I have the same problem, for 2017. On page "Apply for 2018 Ontario Trillium Benefit" when I choose "No" or "Yes" for "I choose to wait until June 2019 to get my 2018 OTB entitlement. This means I will get my OTB in one payment at the end of the benefit year (June 2019), instead of receiving it monthly from July 2018 to June 2019" and I press Continue, a new page comes up and I cannot see the information and the amounts I entered for rent. So I am not sure if my numbers are saved somewhere or not!