.....
Travel Bank reimbursements have been so effortless for so long that we do not have fresh data on other techniques such as lounge memberships, lounge passes, luggage fees, seat selection, WiFi, meals, extra costs when changing a ticket, etc. Some of these should be reimbursed by rule (e.g. lounge and luggage), but others depend on exactly how UA describes the transactions. American Express does not intend to reimburse upgrades (moving to another class of service), but will reimburse a fee to select a specific seat. American Express will not reimburse WiFi if billed by a third party, but may reimburse if UA bills it directly.
We do have one fresh DP of a successful reimbursement for a UA Economy plus subscription made on 2/9
here.
UA TB has not been reimbursed since 2/5 (and including those from 2/9 which is the same date as that purchase) so this DP, while it's only a singular one, is not encouraging.
ETA: I have checked all other airline credit fee threads to see if there were/are issues with any of the other airlines receiving credits. There were no DPs reported since 2/5 on any of the other airlines aside for one purchase over in the
AS thread. The fact that the purchase there was made on 2/12 and was reimbursed within a few days as expected is not a good sign for the TB transactions either

.