Within the blog post I outlined other approaches to remove an Office 365 install. Within this article I reported a case, where an affected user was forced to reinstall an OEM system without Office 365 trials to solve this issue.
I had already addressed this issue in April 2018 in the blog post Office 365 can't be uninstalled completely. It appears that you are having trouble uninstalling this preinstalled version of Office 365. On some Windows systems, a trial version of Microsoft Office 365 is pre-installed. The problem: Office 365 cannot be completely uninstalled