Error 429 too many requests when uploading two files simultaneously

[KennelLink]

Suddenly today, seeing error 429 too many requests when our app attempts to upload two files simultaneously.  This is happening with multiple accounts on an app that has not changed where we used to be able to upload several files simultaneously.

[Greg-DB]

I see you've also opened a support ticket for this. We've followed up with you there to get some more details so we can check on this specifically for you. Thanks!