I gave them an FEIN when I signed up, never had a request for W2s
I would be concerned if another company wanted access to my employees' private pay info, addresses, ssn, etc like that.
Oddly, I even had a few strangers somehow use my account number

Similar, I had it for years. Not sure what tripped it as my wife's did have two folks get credit on it (but only one in the last few years). Mine was only me getting credit.

I tried applying a BXP1 to a segment I have already flown now, as there wasn't any C space at the time anyways. I am trying to use the same award code to confirm into a different flight that has availability, but I am getting a "Your Business Extra Upgrade certificate is associated with another reservation." I am unsure why it won't let me use it as 1) the segment I initially tried to apply it to has been flown and 2) it was never confirmed. Is there anything that can be done, or is the award stuck in limbo at this point and I need to contact the service desk?

Have you tried calling CS?

Was going to wait until after the holiday weekend to call. But I ended up finishing my RT that had the upgrade attached to the outbound. So once that reservation was fully closed the UG became "Active" again and able for selection. Self fixed.

Luckily, it still had availability.

C7 on a 77W this past Sunday, so wasn't too worried. Worst case still in PE.

I'm surprised that BX points haven't been extended with COVID-19 shutting down large amounts of business travel. I have thousands expiring at EOY, any idea if there is an extension in the works?

I am in a similar position to you. They were extended last year and I would not be surprised if they were extended again. An early indication would be helpful.

I have ~7800 points, with 5190 of them expiring on 12/31/21. It's not clear to me if I can redeem some awards (e.g. some domestic and international upgrade certificates) and then still have a year to use them, or will those kinds of awards need to be booked at time of redemption? If they are still good for a year after redemption, I should wait until 12/30/21 to redeem them and find a good trip to use them on in 2022.

not sure if this is still a thing, but for a while the awards were refundable with no fee and it extended the life. I redeemed about 5k points for BXP1s and then Immediately returned the awards. It reset the expiration of the points out at least a year.

That seems to be the best backup.

Hoping otherwise they will extend, but we have to wait I guess!

I will prolly have around 5000 points by the end of the year (of which 1700 will expire), so that's how I will proceed unless AA announces an extension.

I used 3300 points to buy my AC membership again. Without FFD, I don't really need to use BXP1s these days, so the AC membership is a decent redemption. Essentially, spend $16,500, get a free membership.

Currently there is no fee to redeposit awards, and redeposit extend the data as if you had earned the points when the award was redeposited