Can’t help you with that here. This issue is about people being unable to login to Softaculous. Please try resetting your WordPress admin password. If that doesn’t fix it, please create a new topic about your issue instead of hijacking this one.
Your account is on hosting volume vol7_6, which is currently being migrated to a PHP 8.2 server. Not all accounts have been migrated yet, including yours. That’s why both your website is down, and may also be the reason why Softaculous is not working.
Your files should be moved in within the next 24 hours. Please try again after the files are back.