Interviewing for an EA Role in The SF Bay Area

Hello!

I'm currently interviewing for the role above at a life sciences start up. I'm at third round and it's a writing assessment. They're using a proctored tool called Canditech. Does anyone here have experience with it? I'm really excited for this role, and they're excited about me, but these type of assessments turn me off a bit, and I want to make sure it's worth my time.