Is the money received from the institution permissible or forbidden, given that we did no work in exchange for this money other than daily attendance, after we left our original offices to support the former manager, and tried to paralyze the work of the new manager and the remaining employees?

You mentioned that you abstained from work, so how do you deserve a wage for a period you did not work? If the first manager extracted money for you by stratagem, then this money is not lawful for you except with the consent of the authorized person in the workplace. Otherwise, you must return it. For the worker deserves his wage by enabling himself, even if he does not work, or by fulfilling the benefits, or by the passage of the period without any impediment to the utilization.