I can't register

Ive been using draftsight for some time and have become somewhat reliant on it.  I have vendors and management expecting a floor plan drawing completed and in thier inboxes before they get to work in the morning.  its 7:30pm now and Im still here.......  Ive been trying to re-register since 6:15 and obviously haven't even started on the drawing yet.  I imagine the end result of this will reflect poorly on my reputation in what I say I will deliver. I have read through the forums and followed all the instruction I can find but I continue to get a message that says I must re-register.  What is the purpose of the ongoing registration and Is there a limit to the number of times it can be re-registered or am I doing something wrong?  Ive uninstalled and re-downloaded and tried all other instructions and followed the flow chart.  Im not sure how to further describe the problem Im having other than the popup that repeats that I must re-register. 

Is there something im missing?