Please see your error on screenshot below.

Please check that the file /htsrv/anon_async.php exists and is readable by PHP.

I'm frustrated. I have everything 777

@fplanque wrote earlier:

Please see your error on screenshot below.

Please check that the file /htsrv/anon_async.php exists and is readable by PHP.

ok now?

If I try to log in with random data I'm asked if I want to save the login data, so if it's not fixed is it after the button as the button seems to work

@bbanik The error here is on the webserver level (before b2evolution gets called). You need to ask your webhost about this. They might have some over-zealous security filter (like a badly configured mod_security) that blocks your request.

@bbanik b2evolution 6.7.7 will display additional help/debug info in a case like this one now in order to reveal what the problem might be (no more click that displays nothing).