I think that password case is a separate issue. If I remember correctly, many online services do "secretly" accept mixed cases for the same password (because users make more mistakes than they realize and it would be "annoying" to be too strict)
If you didn't receive a "Someone just used" email (with an IP that's completely geographically off from where you are) that's a good sign, of course.
I tried pushing back on just such a request once, pointing out it made of of the password "security" requirements pointless (use mixed case letters).
"But famous company X does this, it is really convenient for users!" was all the response I got. All I could do at the time was (internally) shake my head.
If you didn't receive a "Someone just used" email (with an IP that's completely geographically off from where you are) that's a good sign, of course.