Strange!
It happened due to my VPN. In both cases I entered a few IPs in
Use IP address allow list for login attempts
When I Googled “My Ip” in the browser I got an IP which is in the above list. However, Hestia Login page used the original IP of my computer which is not in the above list. WHY?
I tried another user which has no IPs in
Use IP address allow list for login attempts
And it works fine.
I solved the IP problem and everything work fine.
Thank you eris for the prompt response 
BTW.
This means that my previous question:
Use IP address allow list for login attempts
Is also solved
Thank you