I have asked to see what happens suing Max's suggestion.

Here is the image if anybody still needs it.

The page when my team member clicks the link in the email from appery says.
" Error
You do not have the necessary permissions to perform that operation."

He has a free account... Do all team members need to be pro users?

I have shared a project with a team member but when the click the link to edit it says they don't have the permissions to edit the project.

Any thoughts to help us collaborate?