What version of Lightroom are you using? I don't know about your Windows 10 choices. But when I checked Autoplay choices it only gave me the choice of Lightroom 4. If that is the same on your computer, and you are using a newer version, I wonder if that could be the problem.
I have the Adobe CC package.
That's what I have, Also. However, I still have Lightroom 4 installed along with my CC installation. I don't know if that is affecting my choices or not.
Just discovered that at some stage, in LR preferences, that the "Show Import Dialog when a memory card is detected" check box, had become unchecked. I didn't do this myself as a far as I am aware, so I assume it did it in an update either of Win 10 or the LR programm via CC updates.
Checked that box and now all is well.
Thanks for taking the time to look at my question.
Please open Lightroom and go to the Preferences of Lightroom. From there please go to the General Tab.
Under the General Tab, please look for Import Options , the option "Show import dialog when a memory card is detected" should be checked.
After doing that please restart Lightroom, and then connect the card and see if it works.
Please let me know if it helps.