Bought signal

 
I BOUGHT A SIGNAL,TRIED TO INSTALL IT ,SAYS INSTALLATION FAILED
 

Did you buy something from the market or did you rent a signal?

What is written in the logs?

DON'T CRY! - you need not.

 

Make sure you've done everything as described here: 

How to Subscribe to MT4/MT5 Signal

https://www.mql5.com/en/forum/189731  (MT4)

https://www.mql5.com/en/forum/336422  (MT5)