Leads on our form are coming in corrupt

When users are filling out our Demo Request form, the fields they fill out ar being sent to us corrupt. We have pretty simple fields such as first name, last name, company and phone number. When I test myself if works, but many leads come in corrupt.

See example below. Has any experienced this or know how to fix?
Thanks!

First Name: aqogwJLjt
Last Name: ajJLoNpkBwMr
Company: mtjFyWcsOY
Company Size: 501-1,000
Number: eszYGafDEXbrIjOc
Keep me updated on news from Butterfly: ighWNdFM

The page I need help with: [log in to see the link]