Browswer Caching

Hello,
I have "SET EXPIRY" to 8 days several times.
http://64d.f92.myftpupload.com/
https://jokes.chuckroy.com
Every time I come back to hummingbird the setting are the same old setting. I go thru the motions and it doesn't change. I keep getting slow speed scores because of this error. Can you please help? I've opened support access...