Please follow the below instructions to delete form submissions in bulk
Step 1. Log in to your Shopify admin area and go to Apps -> AAA Form Builder + File Upload
Step 2. Click on the drop-down arrow next to the Edit button for the form you want to delete submissions and select View Submissions
Step 3. On the Form Listing page, select the entries you would like to delete.
Step 4. Click on the Delete button
Step 5. Click on Ok on the confirmation box to delete the selected submissions
Note: When entries are deleted, the uploaded files associated with the submissions also get deleted.