There are two different levels of lock-out that can occur. The first is getting locked-out due to multiple failed login attempts. When this happens, you'll get the following message:
This is expected behaviour when you, or somebody else, attempts several time to access your password protected WordPress resources without success.
The platform limits the number of login attempts from a single IP address to three within twenty minutes.
The second, and more persistent lock-out, is at the network level, where your IP address is banned by our firewalls. In this case, you won't see anything, except your browser trying to connect to the website.
Please open a support ticket, and we will lift the ban in a matter of minutes.