I have had many reversals over the years, often seemingly at least six months after the points have posted. Not once have I returned the item, added a discount code etc... just the standard "your order no longer meets the criteria" email. My solution has been to use topcashback. The payout is roughly equal to BAeStore if you value at Avios at a penny a pop, and, once withdrawn they can't claw it back.

Tracking indeed is not something safari will allow too easily now, so I default to Chrome for all the tracking nonsense.