What are your export settings?
Let's see the project, and someone here will get to the bottom of this.
4 easy steps to upload and share, per these instructions...
- With your completed project on the timeline, click the 3-lined 'hamburger' menu, top-left. Click FILE | BACK UP PROJECT FILES TO FOLDER. Specify a folder. Click SELECT FOLDER.
2. Using the PC file manager, go to where the numbered folder was saved and upload it to a free server - Google Drive, MS OneDrive, etc.* Do not upload the exported file.
3. Get a shared, public link that ANYone can view. (If Google Drive, check the box.)
4. Paste that link here, or click the folder, above top-right in this forum, and message it to me. This is private and won't be shared.
* Before uploading, right-click the folder, click PROPERTIES. Look at the File Size to confirm that it's not too big for the free space on the server.