Not sure if your first paragraph refers to this website or IObit's website. If its the PCA website, then this was a known problem, just persevere with it. You might find that it helps to login at the bottom prompt of the page when you write the question?.
With regards to ASC 4.0 Free, I have used this program from the days of origination as Advanced Windows Care to the present version of Advanced System Care, both the free and the paid for by free voucher codes, and I have found the programs can get quite 'quirky' at times.
But that doesn't quite answer the questions, so I would suggest that you try the IObit forum or support, both contactable via the 'More' link at the top of the product.