In regard to the first of your issues, Eric Root posted the following to another individual.
"If this is an e-mail you received, or a popup on the screen, about the time you were actually logging in, there is probably nothing to worry about. The location in the e-mail is where your ISP reported it. If their servers are in a location distant from you, there will be a large error. Based on other posts I have read, the distant error can be very large."
At some point, I think he followed up with (possibly in reply to someone else):
"You can also check your device list to see if there is a device signed in that you don't recognize. You can remove the device using the steps in the article below.
You have changed your password which covers what I think he said next.
"As a precaution, change your password.
Apple ID device list -Check to see where you‘re signed in. https://support.apple.com/en-us/HT205064
Apple ID Password Change. https://support.apple.com/en-us/HT201355
What to do after you change your Apple ID or password - Apple
Support I suggest doing this before you change your
Apple ID or password. https://support.apple.com/en-us/HT204071"
Maybe you will want to check out the device list as he mentioned above and to use the above link. Kappy also suggested checking out this link.
Still, there seems to be more going on with your devices. I have no suggestions. Maybe Eric will come along. Eric, if I don't recall things exactly or you think what I think you said doesn't apply here, then you have my apologies.
