Page caching is the usual reason you can get things like this happening. It’s possible to set up the caching plugin to not cache pages with Participants Database forms, and I recommend you do that so you can cache other parts of your site.
It’s unlikely the two users would have the same link or be looking at the same record. You can test this by showing the private link in the admin participant list, the “private link” URL will be on that field. It’s best to test these when you are not logged in, you can do that in an “incognito” window on your browser.
Thanks, I thought the caching was teh issue so I disabled it, the problem however was seemed to still happen after I disabled the caching plugin.
from discussions with some of the affected users I seem to have had a couple issues,
1) emails were not being received (I was not able to replicate this issue though)
2) after users created their application they were brought to a page with a different users information. (hence I thought the caching plugin)
the form was set up as follows: enter name email click submit this triggers the create record and then lets them continue onto page 1 of the form. this is where they were seeing a different users information.
currently I am manually creating applications as deadline is friday. I will do some more involved testing this weekend once activity has died down.
Check your settings under the Signup Form tab, check that you do not have matching data update an existing record.