My SP-API secret key expired a couple of days ago, and I finally got around to rotating it, but now my LWA tokens - even though I am generating brand new ones - are being rejected as expired. They're supposed to expire an hour after generation, but they are already reported "expired" as soon as they try to use one that I created just moments ago.

Does anyone know if there are any current problems with SP-API?

Please ignore the tag, I had to pick one but none were suitable.

EDIT: It just started working without me doing anything, about an hour after I rotated my secret key. A timezone issue?