problem in ea

[Ahmd Mnazʿ ʿBdalmalk Mhmd]

i buy ea and when I've purchased an EXPERT from the site mql5 and when I put it on the platform it disappears

The ea High Volatile and the platform alpari  for the company with it works on other platforms

2 - I no longer receive messages from the Sestem Activite when I used Expert to download it on a new platform .
plz help me .

[Sergey Golubev]

If you really bought any tool from the Market so it should be written on your profile (in Purchases on the left side of your profile).
If you find it on your profile so you can install it directlty from your Metatrader (you can install it in case you are on Windows; because the Market dows not work for Linux and MacOS).

Read the following about how to install (make sure that you filled the Community tab in Metatrader with your forum login/pass) - 

----------------

Where can I see my purchases? 
https://www.mql5.com/en/forum/9950/page70#comment_2564931  

How to Install an Earlier Purchased Application
https://www.metatrader5.com/en/terminal/help/market/market_buy