I can’t do 2021 it showed as completed & submitted so I thought had I was able to submit successfully 2020&2022 Why not 2021? Everything’s same for me it allow me Than

You will need to go to the CRA website and to your CRA "My Account to verify your 2021 tax return. If it wasn't successfully submitted or if the CRA are still looking into that tax return you will find out and they will advise you how to proceed. 

You can contact the Canada Revenue Agency/Customer service at

1 (800) 959-8281.

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