Invalid form configuration. Invalid "custom" attribute. Must start with matching domain

Hello Team,

we have copied the contents from https://trendsresearch.com/ to the following new server
https://trendsresearch.newagesme.com/two-year-subscriptions/

But when we access the subscription page we are getting the following error “Invalid form configuration. Invalid “custom” attribute. Must start with matching domain.”

Any idea about this error and how to fix it?
s2member pro is only limited to one domain?