Confirm the file is a supported type (.pdf, .doc, etc.) and under the size limit.

If uploading from Google Drive or Dropbox, check that the integration is still connected and you're logged into the correct account.

Try uploading directly from your device instead — this rules out a third-party storage connection issue.

Refresh the page or try a different browser/incognito window in case of a caching issue.

Check your internet connection if the upload progress bar stalls or times out.

Make sure you're in the agreement editor (not just the preview/upload screen). When signing an agreement, click 'Start' to be able to add a signature, write text, and edit.

Click the field you want to add, then move your mouse cursor onto the page, and click the area where you want the field to be placed.

Check that every required role has a name and email address filled in.

Make sure all mandatory fields have been assigned to a signer - an unassigned required field can block sending.

Verify email addresses are correctly formatted (no typos, extra spaces).

Ask them to check spam/junk folders.

Confirm the email address was typed correctly at the Review & Send step.

Note: Lumin Sign only emails the sender and the current signer (for sign-in-order documents); other signers won't get a notification until it's their turn.

The Document ID (This is the string of characters found in the viewer's URL, like 5f9aa1d1358f0b001182d3bf) or the Document Name.

A screenshot or screen recording of any error messages.

An explanation of the task you are attempting to complete and the steps you took before the error occurred.