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Copy or download the QBM file into your local drive and try to restore it from there. Any error message?
Thank you for posting here in the Community, @jarabraham.
If the problem continues after following the steps provided by @Fiat Lux - ASIA, I recommend opening a sample company file. It'll help us determine the cause of the problem within the program.
For future reference, visit the Fix portable company file issues in QuickBooks Desktop article. It contains the detailed steps about the troubleshooting steps.
If there’s anything else I can help you find in QuickBooks Desktop, post a comment below. I’m here ready to assist further. Have a good one.