Hi Inas,
If you are still running into this issue with your sandbox app I would suggest reaching out to the Care team via a case and let them know what is going on. That way they can take a look at the error and issue you are running into and reach out to our team working on sandbox if they need to help you get to the bottom of the issue. You can submit a case to our Care team right here in Community by clicking on Support where it appears in the upper right hand corner or at any time when you are in Quick Base by clicking the question mark (?) Icon that appears in the upper right corner and selecting manage care case. Certainly let me know if you run into any issues creating a support case and thanks for reaching out Inas.
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Evan Martinez
Community Marketing Manager
Quick Base
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