Just ignore it. The 11 users of your database have some incorrect data and it's not necessary to synch them. just go to Dashboard > Forums > Settings > Features Tab and set "Yes" the "Turn Off User Syncing Note" option.
@martin hey martin i have done that and thats fine, but now for some reason i can not change forum order it wont save and also new posts are not being added, ther is no errors on server and nothing has been changed over night
Please open a new topic and leave your forum URL. The issues you're mentioning doesn't have any relation to the topic title. This topic is closed.
In case you want to say thank you !) We'd really appreciate and be thankful if you leave a good review on plugin page. This is the best way to say thank you to this project and support team.