Will my data be deleted when i downgrade from silver to bronze and exceeds the available space?

Hi!

If i have 40 GB of data in my storage (assuming that i'm in silver subscription plan) and then i decide to downgrade to bronze, what will happen to the 30 GB that is not supported in bronze?

The Upload Storage Space for the Silver accounts is 100 GB and for the Bronze accounts is 10 GB. If you have 40 GB on the Silver account and you decide to downgrade to Bronze, your files will not be deleted, but your account will go over the limit and your forms will be disabled. 

In that case, to enable the forms you will have to clear upload storage space (reduce it below 10 GB) on your account. To achieve that you will have to delete the submissions with uploads.

How to Delete Form Submission Data

Please take a note: Deleted submissions are permanently deleted and can no longer be restored. 

I would suggest you to first download your files to your computer and then to delete them. 

How to Download Form Submissions as Excel/CSV/PDF?

How to export all of your data at once

How to Download the Submission Files

Other solution would be to upgrade your account back to Silver subscription if you want to keep all files on your account.