Unfortunately, Mint is not designed to be used in this way; you typically cannot use Mint if you can't connect an account. While it isn't ideal, you could technically go to the Accounts section in the top right corner and add Other Property, and then put in the amount of the account/asset you wished to track, but bear in mind that doing this does not allow transaction data to be saved and the amount must be updated manually, and that this is not what Other Property is intended for (it is more for tracking assets like vehicles).
If the account is supported by Mint (indicated by being able to find it when searching for it during initial set up) but you cannot connect to it, please instead provide more details and we will do our best to assist you.
Lastly, if you are interested in tracking these accounts in a more suitable fashion than what has been presented above, you might find Quicken suits your needs better.
People come to Mint for help and answers—we want to let them know that we're here to listen and share our knowledge. We do that with the style and format of our responses. Here are five guidelines:
Keep it conversational. When answering questions, write like you speak. Imagine you're explaining something to a trusted friend, using simple, everyday language. Avoid jargon and technical terms when possible. When no other word will do, explain technical terms in plain English.
Be clear and state the answer right up front. Ask yourself what specific information the person really needs and then provide it. Stick to the topic and avoid unnecessary details. Break information down into a numbered or bulleted list and highlight the most important details in bold.
Be concise. Aim for no more than two short sentences in a paragraph, and try to keep paragraphs to two lines. A wall of text can look intimidating and many won't read it, so break it up. It's okay to link to other resources for more details, but avoid giving answers that contain little more than a link.
Be a good listener. When people post very general questions, take a second to try to understand what they're really looking for. Then, provide a response that guides them to the best possible outcome.
Be encouraging and positive. Look for ways to eliminate uncertainty by anticipating people's concerns. Make it apparent that we really like helping them achieve positive outcomes.