Any EXPORT related buttons I am including on the toolbar of the grid are not being displayed.
Any limitations or settings that should be in place to have these work?
Could be security rights if you have that enabled, could be a lot of things. Hard to tell since there’s not much to go on to 
are you adding it to the right toolbar? i mean the grid toolbar, summary, search… each one has its own toolbar also you can check your templates and buttons make sure they are okay