Hi, have you renamed wp-admin path name in HMWP settings? If you have enabled IDS option, then please check “Dashboard >> Intrusions” section and see if any such requests are being listed there. Let us know. Thanks!
What’s the current “WP_MEMORY_LIMIT” set in your site’s wp-config.php. Please try increasing it as explained above (You should ask your hosting provider regarding the maximum php memory limit allowed).