Can I set Same Account on Master and Slave?

It is technically possible to add the same account as a Master and as a Slave at the same time.

However, to do so you need 2 distinct Trade Copier cockpits (2 distinct username). When you will try to add the second account it is possible that you get an error message asking to contact the support. In that case we just need to manually allow your second account. Please just ask if it happens. Please note that we do not allow this with Free subscriptions.