'shared host' ...
2 possible issues - one is theme ...
shows compat up to version 3.0 of Moodle.
The second possible issue ...
folks who are on shared host may have issues in setting
the 'right' character set/collation and file format (Barricuda) for DB for version 3.6.any
Running the scripts in moodlecode/admin/cli/ might fail as they require a user that can alter DB server config and no one does that on shared hosting DB servers cept tech support of provider.
'spirit of sharing', Ken