Nevermind, i already see it.
The error:
PHP Code:
INSERT INTO useractivation VALUES (NULL,'11','1056925402','84189185',0)
shows us that it has 5 fields while it should contain 6 fields (originally in 2.3.0).
And you are using 2.3.0, so i guess that there is a hack for <2.3.0 and that you changed some lines in it wich aren't compatible with 2.3.0. If you did not made any changes in root/register.php then i'd suggest you to re-upload the original root/register.php from 2.3.0.