Selecting a file is not always the same as completing its upload. Wait for processing and check for an error before continuing.

## A rejected or stalled file
1. Confirm that its format is supported. Renaming a file extension does not convert the document.
2. Open the original and check that it is complete, readable and undamaged. Password protection can prevent processing; only make an accessible copy if you have permission to do so.
3. Check your connection and try an up-to-date browser. Follow any file-size error shown on screen and, if needed, use a smaller but still legible copy.
4. Keep the originals. Remove an unsuccessful selection from the creation step if necessary, then choose it again.

## Documents missing after sign-in
Some browsers cannot preserve selected files through the login process. Check the file list again. If a property check may already have been created, look in [My reports](https://biedbril.nl/en/reports) before starting another one.

For continued trouble, [contact support](https://support.biedbril.nl/hc/biedbril/articles/en-contact-biedbril-support) with the file type, size, exact error and whether the report already exists. Do not send an entire confidential file collection without first establishing what is needed.