Hi
Please check:
1. you have 2 user groups "Manager". For remove confuse, please or rename one group or remove.
2. In Real estate settings -> Administrator Settings -> Editing options -> Select users groups who have access to edit
In this settings - you must set only USER Groups - who at Frontend, in MyHouses - will see and have edit possibility the house from other users.
In these setting you MUST set only Moderator or admin. Else anybody will can edit houses from other users.
Regards
OrdaSoft team