Severe Bugs blowing up Account? ENTIRE ACCOUNT GONE after Update and Account begins completely at Zero!

After Logging in in SC (1.5.4b) my Account is Completely gone!

All everything is gone!

My Username was “ViRUS” but is now reverted to the old Username “XxSiebensterNxX” and the Account is completely gone!

All my Progresses like my all Destroyers, Ellydium Ships and all everything - Gone!

the Account starts at Zero!

 

Its it Possible that cused by the E-Mail? My Steam and Gaijin-Account is the same E-Mail, and linked together.

 

Need Help from Developers or whatever!

or What can i do??

Contact to support please https://support.gaijin.net/hc/en-us/categories/200005051-Star-Conflict