The link you followed has expired.

Hi everybody,
Recently install ultimate member because this plugin looks amazing, but right after the installation the plugin show the following message “Ultimate Member needs to create several pages (User Profiles, Account, Registration, Login, Password Reset, Logout, Member Directory) to function correctly.”, then i click in “Create pages”. After clicking this option, i got a error in the following link “http://testpage.com/wp-admin/index.php?um_adm_action=install_core_pages”, the error says the next message “The link you followed has expired. – Please try again”, in the console i see a forbidden error from the previous link.
I hope someone know what’s happening.

Thanks.