uploaded to a pretty fresh installation of WP, tried to activate, got the following message:

Plugin could not be activated because it triggered a fatal error.

Parse error: syntax error, unexpected end of file in C:\xampp\htdocs\wordpress\wp-content\plugins\rss-links-manager\rss-links-manager.php on line 306

https://www.ads-software.com/extend/plugins/rss-links-manager/