Hi, you need to configure your email account in cTrader.
https://clickalgo.com/ctrader-email-setup
You can only send email and Telegram alerts, instructions on how to set this up and test are on the product page.
https://clickalgo.com/trend-line-alerts
You can receive Telegram alerts directly to your mobile phone if you have the app installed, use the tool below to test your credentials.
https://clickalgo.com/telegram-setup-test
It is also not possible to install custom indicators on the cTrader mobile app.