If you locked yourself out of WHMCS due to a faulty configuration, you can temporarily disable the login check of the module.
Follow this steps to disable the module temporary:
- Login via FTP to your WHMCS server and navigate to the directory "/modules/addons/adminloginnotify/"
- Create the file "disable_flag"
Now you can login into WHMCS and correct the module configuration.
After you have fixed the issue, please remove the file "disable_flag" again to reactivate the login checks.