The issue here is caused by the fact that OpenCart recommends, and Softaculous does this by default, that the data directory for OpenCart is stored outside of the htdocs directory. But our servers are configured so that PHP scripts from a single domain can only access files from within their own htdocs directory. PHP scripts cannot read other files from your account, such as those from other websites.
I’ve never used OpenCart myself, but I believe there are ways to work around this:
I assume you’re referring to Softaculous here? Because if so, that would be a Softaculous feature, which is not something we can change.
For most scripts, Softaculous only offers a single version of the software, which is usually the latest. In some cases they offer multiple versions, in which case they offer a dropdown to select the version. But even in those cases, they only offer a few versions usually.
If you want to install software and Softaculous doesn’t have the desired version, you will have to install it by hand.
We always do. And if we don’t, asking for a fast answer isn’t going to change that.