I doubt you can do much about your forums as it is hosted freely on informe.com
Take a note, informe com doesnt have anything to do with phpbb.com and never has been.
If you need something to be installed or an upgrade you need to talk to them.
There is even a rule about it
It says no support for third party versions of phpBB
The downloads on this site are meant to thoise who are in control of their boards. ie, have FTP access to the foruym files and can do codechanges on them.
Some even needs an access to the database and be able to run queries there.