[y2ksw]

So this means you don't have even access to the database?

Well anyway this should do the job:

UPDATE setting SET value='0' WHERE varname='ipcheck' LIMIT 1;
UPDATE setting SET value='' WHERE varname='banip' LIMIT 1;

Please note that you may need to change also the datastore => options row, setting the above values accordingly.

Changing these values remove the IP ban, but the hacking damage may go further.