I knew my modified login URL so the problem was not there.
Anyway, I have deactivated HMWP and cleaned up .htaccess file and database so I can start trying afresh. But now I plan to try it on test server first. So I have following two questions:
1. Will HMWP work on local host? Is there any extra precaution?
2. What about things written in FAQs at page https://codecanyon.net/item/hide-my-wp-amazing-security-plugin-for-wordpress/4177158/support for installing it in conjugation with W3 Total Cache? Do they need to be followed or HMWP has overcome that limitation now? Specifically, can I select “Rewrite URL structure” if I need to use Minify module of W3 Total Catche?
Thanks!