On the Tanzu Hub UI > Foundations (Overview) > Attach Foundation > Foundation Connections > Select a connection > Refresh Access Key
If you click it several times it will show the error below:
Failed to rotate Auth App. Please try again after one hour. when trying key refresh
Tanzu Hub 10.3.6 and prior
This is a known bug in Tanzu Hub.
There is still no version that contain fix. Currently the fix is still ongoing testing. This KB will be updated once a fix has been in released.