Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
First, chalk up my Dell XPS laptop amongst those having this exact same problem. Why it is taking Microsoft so long to figure out the cause of the problem, and fix it, we are all wondering. This is starting to remind me of the "randomly moving desktop icons" problem that started a little over a year ago. Microsoft 'claimed' to be working on a fix...yet, over a year later, there is still no fix.
As for sending any sort of file to "Stefan", I am in complete agreement that this is NOT something I'd trust doing, or suggest anyone else do. While it is possible that he is (as he claims) "in contact with" the MS Office team, and while it is possible that he does have the ability to pass along the files to Microsoft, he has presented no factual proof of this. I am not trying to 'discredit' him in any way...but, at the same time, none of us personally knows him, none of us knows whether (or not) he is truly "in contact with" anyone at Microsoft, and no one has any guarantees he will do with the files what he claims. The best way to protect ourselves is to NOT send any files to an individual whom we don't know.