No. Pro Kit doesn't challenge or remove CIFAS markers, and using it has no effect on your marker. It helps you find banks, savings, phone contracts and other options you may be able to use while the marker is in place.
If you want the marker removed
That's what ADVICIFAS Pro does. It reads your CIFAS report, writes letters in your name to the organisation that filed the marker, and escalates when they don't put it right. It's a separate subscription at £14.99 a month. Find out more on the ADVICIFAS Pro home page.
Using both
You can use Pro Kit to get by while a challenge through ADVICIFAS Pro is running. The two are completely separate; see Pro Kit and ADVICIFAS Pro.
Not sure what your marker says? You can ask CIFAS for a free copy of the data it holds about you from the CIFAS website.
