I am trying to download my submissions and it is skipping 50 entries.

May I know how are you trying to download the submissions? If possible, could you please share the screenshot of what you are referring to?

Unfortunately, the screenshot which you tried uploading was not uploaded here successfully. Follow this guide to upload the screenshot:

https://www.jotform.com/help/438-How-to-Post-Screenshots-to-Our-Support-Forum

Thanks.