Why I can't see the Replikanto followers accounts?

One cause of not seeing follower accounts is that your NinjaTrader Global Simulation Mode may be activated:
 

Please turn it off and the Replikanto followers will shows up.

https://ninjatrader.com/support/helpGuides/nt8/NT%20HelpGuide%20English.html?global_simulation_mode.htm

If the accounts do not appear in the Accounts tab of the NinjaTrader Control Center, you will need to contact the broker's support team and inform them that the accounts are not showing up and they will solve the problem. Once the accounts appear, Replikanto will show them all.