@hikerus Do you have AndStatus Android Account Sync turned on? AndStatus is designed to load new messages and attachments in a background, not when a User opens a timeline. If sync is turned off you may need to launch manual Sync with Internet several times as only limited number of messages is retrieved on each sync...
BTW recently new feature request was created to start Timeline download from latest post (as it is done currently for Public Timeline only...). See and discuss at https://github.com/andstatus/andstatus/issues/354