Are rankup with protonexium converted to nexium still possible ? Is that eventually deadline to convert protonexium into nexium ? Why almost noone talks about BtV?
The bonuses in Nexium from the backer ranks were distributed on the 3rd of January. It was announced in our timeline: https://beyond-the-void.net/index.php/timeline/ You can still convert your PROTONEXIUM to Nexiums, but that won't give you a backer rank anymore.
Thanks! So I can sell my coins now and my rank remain?
Once your backer rank has been determined (as it is since the end of the ICO), you can do what you want with your Nexiums, it won't change a thing about your backer rank.