We apologize for the issues that you are experiencing with the New Comcheck-Web. The team is aware that the software is having some performance problems when saving and loading data and are working to address the issue and hope to deploy a solution within the next couple months.
If you wish to continue with this version, one thing that could work is saving the information frequently like entering 2-3 values and clicking on save instead of entering a lot of information and then saving.
Otherwise you can also use the Legacy COMcheck Web version (can be accessed on energycodes.gov) which does not have this issue. You will be required to register a new account. Unfortunately, because the New COMcheck-Web uses a different project structure than the Legacy COMcheck-Web, we don't have a way to export project data from the New COMcheck-Web and import it into the Legacy COMcheck-Web. If you choose to use the Legacy COMcheck-Web, the best way is to start a new project.
If you are using a new energy code (like 90.1 2022 or 2024 Minnesota Energy Code) which is available only in the New COMcheck-Web, Legacy-Web version cannot be used. In such cases, you might want to try saving information in your project after some time or create a copy and see if you are able to save information in the duplicate project.