Hi Erin,
For Changing the font size of the figure , you can use set(gca,'FontSize', value) after plotting where value is the integer number for font Size.
For example
x = [1:10];
y =x;
plot (x,y)
set(gca,'FontSize',18);
Similarly you can use FontSize in xlabel , ylabel ,title and itext when creating them as shown below
title('Title', 'FontSize', 24);
xlabel('x axis', 'FontSize', 24);
ylabel('y axis', 'FontSize', 18);
I could not reproduce the error for tables kindly share the code for the same.
Regards,
Anmol Dhiman