The Govt issued a one-time special GST/HST credit payment in April and recently announced that all benefits will continue until September 2020 even if you have not filed your 2019 tax return. 

Your program purchased most recently may not be showing you an estimate if you have not done the latest updates, or possibly you have entered different income amounts and no longer qualify for the GST credit.

Please note these are estimates only and the amounts you receive from CRA may differ.