Cannot activate plugin

Everytime I try to activate the plugin I get this error:

Fatal error: Class WordPress_Module contains 9 abstract methods and must therefore be declared abstract or implement the remaining methods (Red_Module::get_id, Red_Module::get_name, Red_Module::get_description, …) in /home2/homemaf5/public_html/wp-content/plugins/redirection/modules/wordpress.php on line 144

How do fix this without losing all the redirects saved in the plugin?

thank you

https://ww.wp.xz.cn/plugins/redirection/