Make sure that you fill Community tab of Metatrader with your forum login and forum password (and with confirmation with Metatrader journal about sucessful login).
And please - do not confuse MT4 products with MT5 products (because MT4 products are for MT4 only, and MT5 products are for MT5 only).
All your products are listed in your profile here (you can check) - https://www.mql5.com/en/users/pewter/market
Besides, it may be good to know the error number related to "installation failed" message, and this error number is written in Metatrader journal.
And it also depends on the MT5 build (it is better to have MT5 build 4272 or 4274 because the installation of the Market products was fixed on those builds).
-------------------------
If you can not fix it by yourself so ask the seller for support.

- www.mql5.com
Make sure that you fill Community tab of Metatrader with your forum login and forum password (and with confirmation with Metatrader journal about sucessful login).
And please - do not confuse MT4 products with MT5 products (because MT4 products are for MT4 only, and MT5 products are for MT5 only).
All your products are listed in your profile here (you can check) - https://www.mql5.com/en/users/pewter/market
Besides, it may be good to know the error number related to "installation failed" message, and this error number is written in Metatrader journal.
And it also depends on the MT5 build (it is better to have MT5 build 4272 or 4274 because the installation of the Market products was fixed on those builds).
-------------------------
If you can not fix it by yourself so ask the seller for support.
It's MT5, in the journal it says failed request downloading product [405]
It says latest version
It was fixed in the beta -
Forum on trading, automated trading systems and testing trading strategies
Sergey Golubev, 2024.04.16 07:18
If error 405 so update your MT5 to build 4272 or 4274.There was the thread about it:
[SOLVED] Installation Failed [405]
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Anyway, it is up to you (I just provided the informatiion only).

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