Reverse proxy Setting

Please copy the content of the Debug tab of the plugin and paste it here. Most likely you’ll need to specify a custom Trusted Origin.

Here it is:

HTTP_X_FORWARDED_FOR = IP0,IP0
HTTP_X_MIDDLETON_IP = IP0
HTTP_X_REAL_IP = IP0
REMOTE_ADDR = IP1

Add HTTP_X_MIDDLETON_IP to Trusted Origins field and save the form. Then try to make failed login attempts from another browser. Check the logs tab in the first browser. If you see correctly detected IP address in the list of lockouts, then you’re all set. Unlock your IP and your setup will be done.

I added it, separated with comma
REMOTE_ADDR, HTTP_X_MIDDLETON_IP
correct?

But I see logins with different username than I tried in Limit Login Protocoll. Correct User Names in WP Activity Log with failed login

You should remove REMOTE_ADDR and just leave HTTP_X_MIDDLETON_IP

What is Limit Login Protocol? Can you provide a screenshot?

OK, I tried to enter it alone

but after saving it changes automatic to this:

In this order it’s correct. Can you show this on the screenshot:

But I see logins with different username than I tried in Limit Login Protocoll. Correct User Names in WP Activity Log with failed login

I could. But I tried the second part of your to-do.
Now it is working correct.

Problem solved – thank you very much!

Matthias

Very good!