I believe that he has only one account which is an abandoned account from 2020 and he is asking if he can get the bonus which is not possible in Trustdice bonus rules since it is only reserved for new accounts. However if you didn’t get a bonus first when you signed up you may contact Trustdice support to get help, beside that even having two accounts is not always necessary leading to banning or account closure as long as he is not doing that to take advantage of bonuses or to escape from locked account.
I myself had an experience with Trustdice no deposit bonus and unfortunately I created two accounts one using my email and the other one trying to login using Google account feature that ened up in creating the second account, I have contacted the support right away and they fixed everything. And I also got a profit from that bonus and could withdraw the whole amount after meeting the wagering requirements of my deposit only.