Start mysql as Administrator in Plesk

Here's what 111.93.188.66 (presumably Parallels, India) did:

cat /etc/issue
/usr/local/psa/bin/admin --show-password
mysql -uadmin -p`cat /etc/psa/.psa.shadow ` psa

\q
use psa;
select id,name from domains where cl_id = vendor_id;
select id,login from clients where parent_id is null;
update domains set vendor_id=1 where cl_id=vendor_id;