Amazon locked my account. I use Amazon a lot.
I was shopping for a new cat litter contraption from my cell phone and that was a new product category AND an unknown device.
No, I usually do not shop on my cell. I sit at my desk and use my desktop computer, mostly.
I respond to their email about verifying the activity for security reasons and that site is offline. I know they are under the gun to protect customers more so than ever before, but DAMN! At least keep the security site up, FFS.