EA usage is allowed. However, they must be submitted for assessment before usage.
We discourage copying trades from others as we want to be able to gauge YOUR trading skills. In certain cases, we may allow copying trades (if you have more than one account). Also, trading by youself gives you an opportunity to learn and grow, something that only comes with experience.
Signal usage is discouraged as we would like our traders to be self sufficient (imagine what happens when the signal provider stops? goes missing?). However, using signals will not incur any violation.