BobRay posted an interesting link to a possible solution (
http://modxcms.com/forums/index.php/topic,41329.0.html).
This is what they say on the site:
If the "Forgot Password" email on the login page doesn’t work, there’s another way in. Log in to your host’s cPanel (or the equivalent) and run phpMyAdmin. Select your MODx database and open the modx_user_attributes table. Find the default admin user (it should be the first record). Make sure blocked, blockeduntil, blockedafter, and failedlogincount are all set to 0. If not, click on the little pencil at the left to edit that record. Set those fields to 0 in the Value column, and click on the "Go" button at the bottom.
Now open the modx_manager_users table (in MODx Revolution it’s just modx_users) and find the default admin user. Make a note of the username. Click on the little pencil to edit that user, enter e10adc3949ba59abbe56e057f20f883e in the password field, and click on the "Go" button at the bottom. This sets your password to 123456.
You should now be able to login using the original username and the password: 123456. Be sure to change your password to something more secure after logging in.
The weird thing is that all these fields ARE set to 0 and the row also mentions 2 succesful logins, but I’m still getting that error
When I tried accessing the manager page with firefox, I got to the password field againg (I don’t know if I was already unblocked, or if it worked because of using another brower {I’ve been using google Chrome until now}) but when filling in the new password "123456", I got blocked AGAIN.
I have now reset the password, I’m still blocked, and am going to sleep... We’ll see what happens tomorrow.
Thanks for the responses, I hope we’ll find a solution.