The visibility of items on your chart is controlled by your chart settings which can be accessed from the chart screen header (tap the three dots drop-down and then 'Manage items'):
Check that everything you'd like is enabled in the list titled 'Display on chart'.
If options are missing from that list then simply toggle over to 'Items to track' and enable them there. Items must first be enabled in 'Items to track' in order to be available for 'Display on chart'.
If you have custom info lines set to display on your chart then they will only display once they have at least one day of data entered for them that cycle. This is to ensure an uncluttered chart view!