Off quotes/Requote could be returned by broker when it is not able to execute the order at the requested price as the market price has changed. In few cases, the broker could be experiencing temporary high latency, and it is not able to sync price with their Liquidity Provider. This error also happens when your account is configured with "Instant execution" mode, with this mode, you ask your broker to execute the order sent with a specific price, and if the symbol price has changed at the time of the trade, the broker send us a Off Quotes or Requote error. Learn more about mt4 execution here : https://www.metatrader4.com/en/trading-platform/help/positions/execution
The Trade Copier will try to send several times the order(s), and if the order(s) is still not executed, we return the status "Deleted : Off Quotes". In that case, the only solution is to try to place a new order, and check the discrepencies between masters and slaves accounts.