PenciDesign Supporter replied
Hi,
We've said about this feature here:
https://optimize.pencidesign.net/1.-installation-1#hosting-configuration
Penci Speed Optimizer plugin has used curl_exec function - Some hosting have to install software for viruses scanning or security plugins can understand it's a virus. So, you can add folder wp2speed in the ignore list of plugin Wordfence.
Best Regards,
PenciDesign.