Setting up API key

Hello all,

I am having trouble setting up the API key so that I can install modules. I have copied and pasted the "default" API key name and code from Open cart > settings > users > API,into the "Market Place API" to install the Multivendor Plugin I bought, but I get a message saying : "Signatures don't match"

Is this API key something the pluging vendor should provide? of is the API from Open cart > settings > users > API (this is the one I am using)

Thank you.

If I were you I wouldn't use the marketplace in the OC admin, I would browse to it directly here:
https://www.opencart.com/index.php?rout ... /extension

Download the extensions and then install them through the installer.

Better to use marketplace for the extension downloads