PipSync needs the server string your broker publishes, not a friendly name.
Where to find it
- MT5 desktop — File → Login to Trade Account. The server dropdown shows the exact string.
- MT5 mobile — Settings, then your account entry. The server sits under the login number.
- Broker welcome email — usually printed next to the login and password.
Mistakes that produce "invalid account"
- Dropping part of the name (
ICMarkets-Live17instead ofICMarketsSC-Live17). - Lowercasing it.
- Using the demo server for a live login, or the reverse.
- A trailing space from copy-paste. Retype it if in doubt.
Brokers with many servers
Larger brokers run several live servers, and your account only exists on one. Live, Live2 and Live17 are different servers — picking the wrong one fails exactly like a wrong password.
If MetaTrader itself cannot log in with the same three values, the problem is at the broker, not in PipSync.