Why the app recommends API first
- No terminal required.
- No EA setup required.
- Fewer moving parts during setup.
Why someone would still choose EA
- They prefer the terminal flow.
- They already run MetaTrader locally in the exact setup they want.
- They are comfortable managing chart attachment, WebRequest, and terminal uptime.
Main tradeoff
The EA path works, but it adds operational requirements. One MetaTrader terminal is needed per account, the EA must stay attached and running, and terminal connectivity issues can stop copying even when the web app looks fine.
Practical recommendation
Choose the API path if you want the simplest current setup. Choose the EA path only if you specifically need the terminal-based approach and understand the extra maintenance it requires.