I have had this problem for 27 days now, and that's how old my ticket is.
So far, there seemed to have been 2 attempts by GMs to solve this with no luck. Now I just got a message that says they're actively tracking this problem but some issues are "outside our control and can not be resolved by a GM"....
A problem like this which involves the dilithium exchange is really a serious matter as it involves the real cash system of the game. I've been playing for 70 days, been a lifer for 68 days and had this problem for 27 days. AWESOME!
I also have the internal error message, i cannot cancel my cryptic points . There should be a way to solve this, i never had that problem with other games. After that maintenance, I had lost 1481 Cryptic points, all gone now (Exchange Rate was 317, that's a lot of Dilithium). I had invested real money and I was all excited , i was looking forward into buying a good spaceship .