I have noticed the different visibility codes at the cpg11d_albums table
0 or zero for all to see... etc.
When I choose a group for access on an album I cannot access after phpBB integration.
Only if I set to 'Only Me'
I have added the proper user for the group in phpBB and even admin cannot view albums when I change in the scrollbar (album properties) for a specific group.
http://www.mullback.com
this is a known issue: admin doesn't belong to any other group but "administrators" (this will hopefully be fixed in a future version of coppermine). Meanwhile, you could create a "regular" user for you who is member of the special phpBB group, or you could switch "Show private album Icon to unlogged user" to "yes" in coppermine config.
GauGau