1. Yes, same platform.
2. Free signal can not be copied to the real trading account.
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How to Subscribe to MT4/MT5 Signal - new instructions
https://www.mql5.com/en/forum/189731 (MT4)
https://www.mql5.com/en/forum/336422 (MT5)

- 2017.04.10
- www.mql5.com
Hi everybody. Does any body have full information about account setting for following a signal provider?
I have 2 questions.
1. Must both provider and follower be in the same platform(MT4 and MT5)?
2. Is that possible to follow with any kind of account (like premium - auto - zero spread)?? or it must be only auto type account? And is it the same in all brokers or it can be different in different brokers?
Thanks a lot to anyone who reads this and reply with good information.