I don't think I've ever opened a diamond box and not received dyes! I keep telling myself I'll never open one again but get sucked back in. Take this comment as me signing the petition!
This has happened to me three times now. I'm currently waiting on support to reply to me but for the previous two times they have put me back into Gold.
This has happened to me three times now, I was in gold each time and then when the new SYS started I went back down to bronze. I have contacted support and they have fixed it but it's going to be pretty annoying if I have to keep doing that at the start of every SYS!