Please disable any Antivir and the Realtime protection of your Defender !
If this didn´t solve your problem any app will block the cheat.
The Software "FACEIT" and "Vanguard" from valorant block the cheat too. So deinstall faceit or disable vanguard from tray.
Some People need to deinstall Vanguard !
When u run the Loader first time they ask u for a License.
Please enter your key and the Loader will close with message to reopen.
After u reopen the Loader message "Waiting for Apex in Background" and close.
After the Loader closes open Apex and join a match.