There is no exact deadline for yet. Rough period was thought to be 3 weeks.
What issues are you having?
When I try to sign-up a pop-up replies ""NEM Infrastructure Server is not available." then if I try it again it says username is taken. Then if I try a different username it responds "NEM Infrastructure Server is not available." again.
I would much prefer to not DL anything honestly, and send my NEM to an exchange, do you think that will be possible before the redemption deadline?
Also when did the 3-week process officially start so I can get a rough estimate of this "hazy" deadline?
Please read this: https://medium.com/@xtester/extended-redemption-period-d6e7ceaf3a53