You may have insufficient funds in your account to invest the minimum amount required, or the amount you intend to invest. If so, you should transfer funds to your main account first, then invest in your managed portfolio.
*If your ESG preferences are not in line with the selected portfolio, the only option that you see under Manage is Stop. It means you would not be able to invest more in that portfolio or withdraw your funds partially. You can only leave your portfolio as it is, stop it, or re-take the suitability test.