I found one post with the suggestion (it is related to the EA but it is same for the signal):
Forum on trading, automated trading systems and testing trading strategies
What happens to EA if I shut computer down!
Kiran Kumar Balloru Madhava, 2017.11.30 04:45
It is advisable to run the EAs in VPS. Cost of VPS starts with around $10 a month. If you are running the EA in your computer and if you shut down the computer, EA will stop working. No new trades will be placed. Exisiting positions will close if stop loss or profit limits are kept. Hope this info helps. forexveda
https://www.mql5.com/en/forum/189731 (MT4)
https://www.mql5.com/en/forum/336422 (MT5)

- 2017.04.10
- www.mql5.com
Sir,
i have copied signal , does vps require fr it or not?
even if i shutdown pc will signal gets copied?
in mt 5 1 vps is sufficient for multiple mt5 acccounts or i need to register vps for each account?
If you don't use MQL5 VPS the signal copying will be stopped when you turn off your computer.
Follow the instructions Sergey posted.

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Sir,
i have copied signal , does vps require fr it or not?
even if i shutdown pc will signal gets copied?
in mt 5 1 vps is sufficient for multiple mt5 acccounts or i need to register vps for each account?