I think I can explain…..
After all the delays many of the cars got kicked off the fixed production schedule, I also got this email a few weeks back so called CS as I too was confused. They explained that no further deposit was required as I like you had paid the 2k and the 3k deposit. They also explained that now the new portal system is set up that all I had to do was access the link and re confirm or re configure my Emira again, once this is complete you are then locked in for production again and can access your portal for updates when ever you want.
This email now gets sent out 3 months before your car is ready to go into production and the next email should be the enhance and protect email 2 months before and then the check out a month before delivery.
Lotus CC said this process has been set up for all deliveries for April and beyond. Good news really as is seems Lotus are beginning to get their shit sorted