I just noticed the exact same issue and contacted Ufile on Facebook messenger. I entered in my HBP contribution for my 2020 tax return and it did not carry over into my actual return and the CRA website had the amount as $0. I've been doing this for years now and this is the first time this has happened. I just changed my return but I'm not happy that I will now have to pay interest for filing this information late when I entered it in accurately and filed on time.