When you say your tower is showing 20-30-50 do you mean when you look at your defenses?
If so, that is often wrong (but doesn't affect rewards)
The ony reliable way to know if you're a gold tower is to have a friend look at the field (like you did)
You can also tell by looking at your Laurels in the Members, War view.
You get 10 laurels for an offensive win, 5 for an offensive loss, 6 for a surviving lineup (if you're gold) and 3 if youre silver.
You're not on our roster this week but I'm glad to send you an SS whenever you are.