Only models with mirroring account subscribers can be followed in a trial account. This is because performance is calculated based on the Average Subscription Return
Yes. When your mirroring account is set up and funded your trial account will be disabled. You can always open a new trial account using a different email address
Mirroring accounts are funded accounts where real trades are executed on your behalf in your own brokerage account. To open a mirroring account you have to become a client of Covestor, an SEC registered investment advisor, and open and fund a brokerage account with Interactive Brokers. You can find out about mirroring accounts here and detailed differences from trial accounts here.