I've brought the honorbuddy key at 9/14/2017 and it will expire at 10/18/2017. If my buddy come back to work at 10/1/2017, when will my key expire at?
The key duration starts ticking down not at the point of purchase but on first login, which shouldn't have happened yet in your case
emmmmm, honorbuddy will not tell you that it's updating and cannot use while it requires you to enter the key.
There is an update thread https://www.thebuddyforum.com/threads/honorbuddy-update-status-patch-7-3-0-build-24931.407702/ You can monitor this