Hi,
1) you need not change path for wp-signup.php. It’ll be changed automatically when you assign secret key to wp-login.php. So if it’s wp-login.php?hide_my_wp=1234 then it’ll be wp-signup.php?hide_my_wp=1234
If you have any links in your themw pointing to wp-signup.php then you’ll need to change it to wp-signup.php?hide_my_wp=1234
2) we couldn’t see actual URLs as you have striked them out. BUt if you think those are valid requests then you’ll need to add such request names in “exception field” under IDS firewall tab