Welcome to our community, Patrick
Tough call on figuring out what is happening without seeing
the slide or having more information. Sometimes things don't appear
because they are timed incorrectly and a Button or Click Box object
is pausing the slide before they have had a chance to appear.
Another possibility is that a different object is covering them up
and you simply aren't seeing them for that reason. Yet another
possibility is the unlikely problem of having the Text and
Background colors configured to be the same color.
Not even sure what to ask on the second issue. Perhaps post
again and try re-phrasing the question?
Cheers... Rick