What can cause such server Crawling?

My website have become very slow recently, to narrow down what is the issue I found that s2member plugin is causing allot of requests to plugin files. Here how it looks in Wordfence live.

     [United States](http://maps.google.com/maps?q=37.751,-97.822&z=6) left https://itesla.org/wp-content/plugins/s2member/s2member-o.php?ws_plugin__s2member_css=1&qcABC=1 and visited https://itesla.org/wp-content/plugins/s2member/s2member-o.php?ws_plugin__s2member_css=1&qcABC=1
3/20/2022 9:38:20 PM (4 minutes ago)
**IP:**  173.XXX.XXX.XXX  **Hostname:**  ps6XXXXX.dreamhostps.com
Mozilla/5.0 (Macintosh; Intel Mac OS X 11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36

I have edit the server IP and server number for security reasons.
P.s. i found a topic but looks different from my issue, his issue was CloudFlare but I m on Dreamhost.