Version 6.77 was never tested with WordPress 6.0 (released May 2022) or later. While it may work, some users report:
Navigate to the "Previous Versions" section at the bottom, select from the dropdown menu, and click Download. Critical Risks & Security all in one wp migration 6.77 download
The developer changed how the plugin handles large imports in version 6.78 and beyond. Version 6.77 is widely regarded as the last "open" version for several reasons: Easy Limit Bypassing Version 6
Version 6.77 allows manual modification of the constants.php file to increase the AI1WM_MAX_FILE_SIZE . select from the dropdown menu