no passcode

I’m getting the attached message when I try to access an app called Healow. It’s an app for my doctors office. I don’t have a passcode for my ipad and I don’t want one. Why would this message c9me up on this app,?

Hi everyone, I am new to this site and new to everything Apple, I am an Android man. I have a problem that I can't seem to find a fix for. My brother-in-law is terminally ill and not expected to make it much longer. We were cleaning out his house and found an IPAD 4 but I don't have the...