Wordfence Scan Alert

HI
I have a question
Why have Wordfence Scan?detected a plugin security issue?

“Details:?Your site is still using this plugin, but it is not currently available on www.remarpro.com. Plugins can be removed from www.remarpro.com for various reasons. This can include benign issues like a plugin author discontinuing development or moving the plugin distribution to their own site, but some might also be due to security issues. In any case, future updates may or may not be available, so it is worth investigating the cause and deciding whether to temporarily or permanently replace or remove the plugin.”

Thank you