Widgets, unlike templates, are only available to members and are not available for individual purchase.
If you are an active member of MuseThemes, simply:
You may have more than one account setup with MuseThemes, but only one account will be tied to your active subscription. This is the one you should login and download with.
Below the “Download” button you will also see a link labeled “Bundle Download” and clicking this gives you the entire widget library.
You are either not logged in (check the upper right-hand corner for your status) or you have logged in with a basic account. This means there is no membership associated with this email address. You might not have filled out the billing form or you may have more then one account set up with MuseThemes.
This is rare, but happens from time to time. If clicking the download button does not initiate download, send our accounts team an email. They can manually set up a new active account under a different email address, which generally fixes the issue.