Which OS are you trying on?
More importantly, can you please share the website and URL of the form specifically? We will try to dig into the issue at our end.
ANNOUNCEMENT: Would you like to help us improve Adobe Reader?
We have had a few bug reports related to Adobe Reader X protected mode coming in from you in this forum. We have addressed a large number of them in our upcoming Reader update and we would like to hear your feedback.
To that extent, we would like to invite you to the Adobe Reader Prerelease program and try out the latest build. To participate, please fill in the form available at https://www.adobe.com/cfusion/mmform/index.cfm?name=reader_prerelease_ interest and indicate Adobe Reader as the product of your interest.
We look forward to your active participation, feedback and help towards making Reader a better product.
Thanks and regards,
Adobe Prerelease Team
I tried to take a look and see what help this might be, but ran into this: Sorry, this page is not available
Try downloading the form to your local disk, then fill and submit it from there.