strange reactivation

today when I login to my vtecrm free, it ask me to reactivate using my password, i follow the steps, but now when I login again it say "Ci risulta sia stata installato un altro VTE Free per questo utente del sito. Alcune funzionalità saranno quindi ridotte.", the username displayed in the main page of vte is not mine... it's changing something in the activation system???

ps: the login and password that I use is correct, but not the name that appear in upright of vte

I reactivated the software by deleting some value from 2 tables as described in another post on this forum... but don't know why I have to reactivate

Which post please?