Encrypted form problem

I am unable to unencrypt an emailed form, likely due to having downloaded too many keys.  I tried clearing local storage on the browser, but that didn't help.  Any ideas?  

I am sorry, are you experiencing a problem with uploading keys to decrypt form? If you need to switch a key, please try using incognito or private window of your browser. System should ask for key again. 

After using the incognito browser I am able to see the information unencrypted on the Jotform site, but the emails remain encrypted.

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No luck. I used Chrome incognito and it did ask me to upload the key. I was then able to see the unencrypted data on Jotform, but it was still encrypted for the email. It is as if it can’t find the key.
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I have tested a cloned version of your form and the notification was decrypted automatically when I opened the email.

We recommend clearing your browser's cache.

Guide:https://www.jotform.com/help/344-Encrypted-Forms-and-How-to-Use-Them

Please give it a try and let us know how it goes.