I want to install Drawloop into sandbox environment. Installing steps show to choose the environment prod/sandbox while installing the package. However, when I try to Install from app exchange, there is no option to select the sandbox option. I have tried to update the URL, but it is showing an error (file attached). Is there any point I am missing? Please provide a solution if available.
Typically when installing from the AppExchange, Salesforce will ask for your production credentials first. Once you've entered your production credentials, it will then ask you where you would like to install (whether in production or sandbox). If installing in sandbox, it will ask for your sandbox credentials then.
If you are still having issues afterwards, I do recommend reaching out to Salesforce support.