Hey Dave,
I am really sorry for the delay of this reply as it is actually a public day off for us here. Hm, can you check if the file /administrator/language/en-GB/en-GB.com_easyblog.ini contains the following codes?
COM_EASYBLOG_SETTINGS_POST_COVER_WIDTH="Width"
COM_EASYBLOG_SETTINGS_POST_COVER_WIDTH_DESC="In this settings, you can set the width of the cover photo."
COM_EASYBLOG_SETTINGS_POST_COVER_HEIGHT="Height"
COM_EASYBLOG_SETTINGS_POST_COVER_HEIGHT_DESC="In this settings, you can set the height of the cover photo."
COM_EASYBLOG_SETTINGS_POST_COVER_USE_FULL_WIDTH="Use Full Width"
COM_EASYBLOG_SETTINGS_POST_COVER_ALIGNMENT="Alignment"
COM_EASYBLOG_SETTINGS_POST_COVER_ALIGNMENT_DESC="Set the alignment of the photo cover."
COM_EASYBLOG_SETTINGS_POST_COVER_ALIGN_LEFT="Left"
COM_EASYBLOG_SETTINGS_POST_COVER_ALIGN_RIGHT="Right"
COM_EASYBLOG_SETTINGS_POST_COVER_ALIGN_CENTER="Center"
COM_EASYBLOG_SETTINGS_POST_COVER_ALIGN_NONE="None"
Alternatively, download the attached language file.