Registration Activation Error

I transferred to a new server, when I activate the plugin again, I get this error
Centos 7.9
php 7.4

Error Details
=============
An error of type E_ERROR was caused in line 394 of the file /home/example/wp-content/plugins/optima-express/iHomefinderAdmin.php. Error message: Uncaught Error: Call to a member function getResponse() on null in /home/example/wp-content/plugins/optima-express/iHomefinderAdmin.php:394
Stack trace:
#0 /home/example/wp-content/plugins/optima-express/iHomefinderAdmin.php(201): iHomefinderAdmin->getAuthenticationInfo()
#1 /home/example/wp-content/plugins/optima-express/adminPage/iHomefinderAdminAbstractPage.php(17): iHomefinderAdmin->activateAuthenticationToken()
#2 /home/example/wp-includes/class-wp-hook.php(287): iHomefinderAdminAbstractPage->getPage()
#3 /home/example/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters()
#4 /home/example/wp-includes/plugin.php(484): WP_Hook->do_action()
#5 /home/example/wp-admin/admin.php(259): do_action()
#6 {main}
  thrown

thanks in advance for any help!