Check your account status. I also stopped refining dilithium along with a few other issues, and just tonight realized that my account is showing as "Inactive" with 0.0 subscribed days. Since I can prove that a sub was taken out of my account, I can only assume that one of the patches since LoR broke the account system. File a ticket with support, that is all I can offer at this time.
"We don't have time to negotiate in a civilized way... Destroy them!"
"Captains log: I can take up a holding pattern while engineering locates the source of this malfunction, but this area is known to be a frequent destination of pirates. If we are detected by enemy ships, we won't be able to defend ourselves."