Same exact problems we are having.
We have a medium sized web app company and I being in our QA dept got to chose our Load testing programs/Automation, I was planning on showing my boss this program and going UIpro but I cant show him our own site because its HTTPS. Hard to spend money on a product that doesnt work right off the get go. It is appealing for our less trained staff and its ease of use is nice but useless if it cant test HTTPS.
I to tried Google, B of A and other HTTPS sites and you cant create a simple load test without it failing. I hope they fix this soon, they are losing potential customers.
If this is a setting I cant find any documentation on what to do, and have searched a lot for it.