That seems very odd. 99.5% of my flights post. I am talking like 1 leg every 2 years or so, and usually something weird. Like a partner of a partner airline.

Benjamine, do you mind me asking you a polite question?
You started another thread recently about hating United's bait and switch tactics because of the difficulty in redeeming miles.

Now you have started one about miles not posting; which is what I think you will find confirmed here within an hour; an extreme rarity.

Seems like you are completely dissatisifed with UA and have run into some bad luck? Maybe time to try your luck with another airline if you have other options. A healthy competitor analysis might be helpful for you.

I mean this politely, but just curious because your experiences seem rather unique.

Good luck to you.