Now, I can’t synchronisation the users between systems. I read I can it next version. It’s ok.
But… When I swicth off the joomla users plugin in the joomla admin then I can’t login in admin such as administrator.
What I have to give the link in the menü to I login in the phpBB, because now it isn’t operate.
Yes user synchronisation will be part of the next version as stated.
Uninstalling is as easy as unpublishing both the user and authorisation plugin and republishing the Joomla ones. Sounds like you forgot one of them. Now you will need an mySQL editor to republish the Joomla plugins.