Can anybody help me. I purchased a MacBook Pro 5 years ago from a guy and it’s been working great. When it recently updated to the latest operating system, I am getting a remote management pop up saying it is owned by Expedia. I called Expedia IT and they say they can’t find the serial number in their system and I needed to go to Apple. I took it to Apple and they said they couldn’t do anything and to call Expedia back or try Micro Center. I decided to take to FB and see if I could find someone I knew at Expedia tool no avail. Is there anyone in this forum group that has experienced this issue and knows how to fix? It’s my work computer of 5 years. Thanks in advance.