Yes there appears to be an issue the the Status Boost Tracker on the American Express site for account holders, it seems to be tied to those that have also enrolled into the MQM special promotion.

You can find further discussion in the Delta forum at this link:

https://www.flyertalk.com/forum/delt...tus-boost.html

Amex is aware of this and multiple support tickets have been opened up by quite a few individuals already - myself included.

It has been reported that all should sync back up at the next statement close dates.