Hi, HMWP IDS detects malicious requests coming to your site and notify you about it. But all these requests might not be harmful and you need not worry as HMWP IDS will take care of this and will block the malicious requests if Impact level is more than 20 (default value specified in HMWP IDS). You can stop receiving emails regarding this by setting “Notification Threshold” option to 0 in IDS Firewall tab.
If in case, valid request is also listed as intrusion then hover over that request name and click on Exclude link to add it to exception list.
And if you don’t want IDS feature the you can disable it from IDS Firewall tab.
As it’s nginx server we cannot change any settings in HMWP as the rules will also needed to be updated in nginx config file.
Can you please let us know the server login details so that we can look further into the issue? Thanks!