* Is it correct that I can not use signals from several providers on my single account due to synchronization (synchronization feature ON)?
Kind of correct. You cannot subscribe to multiple signals on the same account, period.
* Is it correct that if synchronization features is OFF and the terminal looses connection, trades from a provider will not open later when terminal establishes connection again?
The synch feature can not be turned off. If you uncheck it in the options it just means that MT will ask for manual confirmation from you before opening orders.I suggest you sign up to a free demo signal with a demo account so you can have a play around with the options etc to get a good idea of how it works.
Thank you Stuart for the clarification! And I signed up for demo.
I would hope subscriptions to multiple signals on the same acc will be made possible in the future including symbol filter.
Maybe gap of up connection of vps. But wouldn't it copy with delay some seconds or even minutes later ??