Please follow the steps listed below to attempt to correct the issue.
1. Verify File Type
Check Allowed File Types: Confirm you are uploading one of the following supported file types: .PDF, .JPG, .PNG, .GIF, .TIFF
File Extension Check: Ensure the file has the correct extension (e.g., “file.pdf” instead of “file” or “file.doc”).
2. Convert the File to a Compatible Format
Use File Conversion Tools: If the file type isn’t supported, convert it to a compatible format:
Built-in options (e.g., saving as PDF in Microsoft Word or exporting as PNG in graphic editors).
On mobile, taking a screenshot of the file will typically correct the issue
Save the file with the correct format and upload it again.
3. Use a Different Browser or Device
If the error persists, switch to another browser such as chrome or try a different device. Outdated browsers may cause compatibility issues.